CN107398164A - A kind of system for desulfuration and denitration - Google Patents
A kind of system for desulfuration and denitration Download PDFInfo
- Publication number
- CN107398164A CN107398164A CN201710862523.0A CN201710862523A CN107398164A CN 107398164 A CN107398164 A CN 107398164A CN 201710862523 A CN201710862523 A CN 201710862523A CN 107398164 A CN107398164 A CN 107398164A
- Authority
- CN
- China
- Prior art keywords
- denitration
- flue
- oxidant
- spraying
- flue gas
- 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.)
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Classifications
-
- 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
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting 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
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/108—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
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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 provides a kind of system for desulfuration and denitration, including oxidant preparation system（1）, the oxidizing agent solution delivery measurement system that is connected with oxidant preparation system（2）, the compressed air system that is connected with oxidizing agent solution delivery measurement system（3）With compressed air system（3）Connected spraying system（4）, flue for conveying flue gas and denitrating flue gas（5）With the desulfurizing tower for desulfurization（6）, described spraying system（4）For spraying oxidant, described spraying system（4）It is located at flue（5）It is interior.The present invention has the following technical effect that：1）Greatly save cost：Oxidation and denitration tower is saved, the method for carrying out denitration by spraying oxidant in flue, more than 100 ten thousand yuan of infusion of financial resources can be saved, be changed to spray oxidant in flue, project only needs tens of thousands of member inputs, can be achieved with.2）Solves existing technical barrier：Need not additionally it heat, it becomes possible to denitration, can solve Industrial Stoves, not good utilisation SCR, the problem of SNCR denitration.3）Denitration effect is good.
Description
Technical field
The present invention relates to a kind of system for desulfuration and denitration, belong to technical field of environment protection equipment.
Background technology
Flue gas desulfurization and denitrification technology is a boiler smoke applied to more nitrogen oxides, oxysulfide generation chemical engineering industry
Purification techniques.Nitrogen oxides, oxysulfide are one of main sources of air pollution.Therefore apply technique net to surrounding air
Change advantagious.
Current desulphurization denitration industrial background both at home and abroad is preferable, China's development flue gas desulfurization and denitrification industrial policy and the market demand
Prospect is considerable, and market potential is larger.The industry is invested in face of stronger market viability, economic well-being of workers and staff feasibility, desulphurization denitration
It the fast development of industry, can also effectively meet the barricade market demand, promote China's low-carbon environment-friendly industry and related industry chain quickly to send out
Exhibition, has good Social benefit and economic benefit, has long-range meaning simultaneously for the sustainable development of socio-economy is promoted.
The flue gas desulfurization and denitrification technology being currently known has the technologies such as SCR methods, SNCR methods.
1.SCR methods:340 DEG C -380 DEG C of flue-gas temperature requirement, many industrial furnace smoke temperature are less than required by SCR
Temperature range, SCR denitration technology are not suitable for industrial furnace smoke denitration.
2.SNCR methods:Furnace temperature temperature range is 850 DEG C -1250 DEG C, and live coking furnace does not possess the temperature required by SNCR
Scope is spent, SNCR denitration is not suitable for industrial furnace smoke denitration yet.
Therefore, China's Industrial Stoves desulphurization denitration, it is faced with desulphurization problem and easily solves, and the insoluble skill of denitration problem
Art problem.
The content of the invention
The purpose of the present invention is overcome the deficiencies in the prior art part, there is provided a kind of system for desulfuration and denitration.
The system for desulfuration and denitration of the present invention, including oxidant preparation system（1）, the oxidation that is connected with oxidant preparation system
Agent solution delivery measurement system（2）, the compressed air system that is connected with oxidizing agent solution delivery measurement system（3）And compression is empty
Gas system（3）Connected spraying system（4）, flue for conveying flue gas and denitrating flue gas（5）With the desulfurizing tower for desulfurization
（6）, described spraying system（4）For spraying oxidant, described spraying system（4）It is located at flue（5）It is interior.
Described spraying system includes heat-proof corrosion resistant erosion nozzle.
The principle of the system for desulfuration and denitration of the present invention is wet type low-temperature oxidation Off nitre：Flue gas is used under 80-150 degrees Celsius
Oxidant, ozone, hydrogen peroxide and sodium chlorite are oxidized to N0 to be absorbed with alkaline water after N02.
The invention belongs to omit invention, in place of the technological innovation of prior art, essentially consist in and eliminate two steps
Suddenly：
1）Eliminate denitrating tower：The present invention carries out denitration reaction directly in flue, by setting up spraying system handle in flue
Oxidant is sprayed into Alevaire, and reaction is fully mixed with the N0 in flue gas.
2）Eliminate heating step：The flue-gas temperature of Industrial Stoves discharge is de- generally in 80-150 degrees Celsius, flue
Nitre reaction is also to be carried out under this temperature range, so flue gas need not additionally heat up.
The present invention has the following technical effect that：
1）Greatly save cost：Oxidation and denitration tower is saved, the method for carrying out denitration by spraying oxidant in flue, Ke Yijie
More than 100 ten thousand yuan of infusion of financial resources is saved, is changed to spray oxidant in flue, project only needs tens of thousands of member inputs, can be achieved with.
2）Solves existing technical barrier：Need not additionally it heat, it becomes possible to denitration, can solve Industrial Stoves, no
Good utilisation SCR, SNCR denitration problem.
3）Denitration effect is good.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Wherein, 1 is oxidant preparation system, and 2 be oxidizing agent solution delivery measurement system, and 3 be compressed air system, and 4 are
Spraying system, 5 be flue, and 6 be desulfurizing tower.
Embodiment
The system for desulfuration and denitration of the present invention, including oxidant preparation system（1）, the oxidation that is connected with oxidant preparation system
Agent solution delivery measurement system（2）, the compressed air system that is connected with oxidizing agent solution delivery measurement system（3）And compression is empty
Gas system（3）Connected spraying system（4）, flue for conveying flue gas and denitrating flue gas（5）With the desulfurizing tower for desulfurization
（6）, described spraying system（4）For spraying oxidant, described spraying system（4）It is located at flue（5）It is interior.
Described spraying system（4）Nozzle is lost including heat-proof corrosion resistant.
The course of work of the system for desulfuration and denitration of the present invention：
1）First pass through oxidant preparation system and prepare oxidant；
2）Conveyed by oxidizing agent solution delivery measurement system and oxidant is transported to compressed air system；
3）By compressed air system by compressing oxidant into spray liquid；
4）By setting the spraying system in flue, oxidant progress denitration is sprayed in flue；
5）By desulfurizing tower desulfurization, NO is absorbed2。
Application example：
On August 4th, 2017, the big day chemical industry in Xuzhou, normal condition original flue gas contains in 3#4# coking furnace exhaust gas volumns 150000NM3/h
SO2 is 845mg/NM, NOX 377mg/NM；
It is required that:After desulphurization denitration processing flue gas:SO2＜ 35mg/NM3；NO ＜ 150mg/NM3.
After the present invention, qualified discharge is as follows in neat stress after spray oxidant in desulfurizing tower gas approach：
| NO | SO2 | |
| First time real-time testing | 128.5mg/NM³ | 20.2mg/NM³ |
| Second of real-time testing | 89.7mg/NM³ | 5.1mg/NM³ |
It can be seen that system for desulfuration and denitration of the invention, although eliminating denitrating tower, denitration effect is still fine.
Claims (2)
1. a kind of system for desulfuration and denitration, it is characterised in that including oxidant preparation system（1）, be connected with oxidant preparation system
Oxidizing agent solution delivery measurement system（2）, the compressed air system that is connected with oxidizing agent solution delivery measurement system（3）And
Compressed air system（3）Connected spraying system（4）, flue for conveying flue gas and denitrating flue gas（5）With for desulfurization
Desulfurizing tower（6）, described spraying system（4）For spraying oxidant, described spraying system（4）It is located at flue（5）It is interior.
2. system for desulfuration and denitration according to claim 1, it is characterised in that described spraying system（4）It is resistance to including heatproof
Corrode nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710862523.0A CN107398164A (en) | 2017-09-22 | 2017-09-22 | A kind of system for desulfuration and denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710862523.0A CN107398164A (en) | 2017-09-22 | 2017-09-22 | A kind of system for desulfuration and denitration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107398164A true CN107398164A (en) | 2017-11-28 |
Family
ID=60388585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710862523.0A Pending CN107398164A (en) | 2017-09-22 | 2017-09-22 | A kind of system for desulfuration and denitration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107398164A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937624A (en) * | 2019-11-25 | 2020-03-31 | 湖南汉华化工有限公司 | Production system for preparing lead nitrate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101053747A (en) * | 2007-04-30 | 2007-10-17 | 武汉凯迪电力环保有限公司 | Simultaneously desulfurization and denitration wet ammonia flue gas cleaning technology and system thereof |
| CN207478297U (en) * | 2017-09-22 | 2018-06-12 | 南通春光自控设备工程有限公司 | A kind of system for desulfuration and denitration |
-
2017
- 2017-09-22 CN CN201710862523.0A patent/CN107398164A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101053747A (en) * | 2007-04-30 | 2007-10-17 | 武汉凯迪电力环保有限公司 | Simultaneously desulfurization and denitration wet ammonia flue gas cleaning technology and system thereof |
| CN207478297U (en) * | 2017-09-22 | 2018-06-12 | 南通春光自控设备工程有限公司 | A kind of system for desulfuration and denitration |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937624A (en) * | 2019-11-25 | 2020-03-31 | 湖南汉华化工有限公司 | Production system for preparing lead nitrate |
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Application publication date: 20171128 |