CN106422746B - A kind of filler and preparation method thereof for flue gas desulfurization and denitrification - Google Patents
A kind of filler and preparation method thereof for flue gas desulfurization and denitrification Download PDFInfo
- Publication number
- CN106422746B CN106422746B CN201610891343.0A CN201610891343A CN106422746B CN 106422746 B CN106422746 B CN 106422746B CN 201610891343 A CN201610891343 A CN 201610891343A CN 106422746 B CN106422746 B CN 106422746B
- Authority
- CN
- China
- Prior art keywords
- filler
- flue gas
- parts
- denitrification
- gas desulfurization
- 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
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
- B01D53/81—Solid phase processes
- B01D53/82—Solid phase processes with stationary 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
-
- 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
-
- 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
- B01D53/565—Nitrogen oxides by treating the gases with solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/402—Alkaline earth metal or magnesium compounds of magnesium
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention belongs to Flue Gas Control Technology field more particularly to a kind of fillers and preparation method thereof for flue gas desulfurization and denitrification.This is used for the filler of flue gas desulfurization and denitrification, and raw material matches as follows in parts by weight: 4-6 parts of magnesia, 5-8 parts of magnesium chloride, 0.1-0.5 parts of phosphoric acid, 0.2-1 parts of glass fibre, 0.5-1 parts of adhesive, 0.5-1 parts of foaming agent.The filling block can be directly placed in the container that flue gas passes through (desulfurizing tower or denitrating tower) in flue gas desulfurization and denitrification；One sparge pipe is set in upper vessel portion, water is used to collect the crystal of filler surface generation during adsorption reaction.The filler is at low cost fastly, and can effectively remove the nitrogen sulfur compound in flue gas, and not will cause secondary pollution.
Description
Technical field
The invention belongs to Flue Gas Control Technology field more particularly to a kind of fillers and its preparation for flue gas desulfurization and denitrification
Method.
Background technique
The main reason for flue gas is the mixture of gas and flue dust, is pollution residential block atmosphere.The ingredient of flue gas is very complicated,
It include water vapour, SO in gas2 、N2、O2、CO 、CO2And other hydrocarbons and oxynitrides etc..Flue dust includes combustion
Ash content, coal grain, oil droplet and high-temperature split product of material etc..Therefore, flue gas is the compound dirt of a variety of poisonous substances to the pollution of environment
Dye.Flue gas concentration height is can to cause acute poisoning, shows as cough, pharyngalgia, asthma uncomfortable in chest, headache, eyes stung etc., serious person
It can be dead.Most commonly slow poisoning causes that respiratory mucosa is stimulated to lead to chronic bronchitis etc., and 1957 Japanese
Yokkachi asthma is both the typical example of the chronic murder by poisoning of flue gas.
Research flue gas desulfurization technique is classified as the emphasis of Air Pollution prevention and control by many countries.There are mainly two types of main in flue gas
Polluted gas, one kind is the sulphur compound based on sulfur dioxide；One kind is the nitridation based on nitric oxide and nitrogen dioxide
Close object.In the prior art in order to reduce flue gas nitrogen sulfur compound pollution index, generally use flue gas desulfurization and denitrification technology, point
For two major class of wet process and dry method, though Wet technique comparative maturity, there is a problem of it is many, such as: water consumption is big, a large amount of to waste
Water resource；Form secondary pollution, wet-treating by pollutant process such as sulphur, nitre in air into treatment fluid, contaminated liquid without
Secondary treatment is crossed, if direct emission, will cause secondary pollution；Processed sulfuric acid is unable to regeneration, and industrial sulphuric acid is caused to provide
The waste in source.Dry desulfurization denitration is still in the exploratory stage in China though solving the shortcomings of wet desulphurization denitration,
By dry desulfurization, denitration, one is handled simultaneously for existing some producers, as a result, desulfurization off sulfide effect is unobvious, treated cigarette
Gas pollution index is still very high.Therefore, it is de- to research and develop a kind of flue gas without secondary pollution, that resource consumption is few, operating cost is low
Sulphur denitration technology is to solving the problems, such as that smoke pollution has a very important significance.
Summary of the invention
In view of the above problems, the present invention provides a kind of filler and preparation method thereof for flue gas desulfurization and denitrification.
The filler is at low cost, and can effectively remove the nitrogen sulfur compound in flue gas, and not will cause secondary pollution.
To achieve the goals above, provided by the present invention for the filler of flue gas desulfurization and denitrification, raw material is in parts by weight
Match it is as follows: 4-6 parts of magnesia, 5-8 parts of magnesium chloride, 0.1-0.5 parts of phosphoric acid, 0.2-1 parts of glass fibre, 0.5-1 parts of adhesive,
0.5-1 parts of foaming agent.
Contain 6 hydrones, i.e. MgCl in the magnesium chloride2·6H2O。
The phosphoric acid PH is 5-6, and the concentration of phosphoric acid is 85%.
The adhesive is rubber powder, specially neoprene, one of nitrile rubber or Oppanol or more
Kind.
The foaming agent is hydrogen peroxide.
To achieve the goals above, the present invention also provides the preparation method of the above-mentioned filler for flue gas desulfurization and denitrification, packets
Include following steps.
(1) ingredient, stirring: proportion weighs magnesia, magnesium chloride, glass fibre, rubber powder and phosphoric acid in parts by weight, puts into
It is stirred in blender, agitation revolution 500-2000r/min, stirs 10 min；Then foaming agent is added, continues stirring 2 minutes.
(2) molding, foaming processing: the mixed material that step (1) is stirred is added in mold, stand foaming 20-50min
Afterwards, it is put into the constant temperature workshop that environment temperature is 30-50 DEG C, is stored 1-3 days, after increasing solidification intensity, takes out finished product, it is spare.
It is de- that the filler can be applied to fuel boiler, gas fired-boiler, coke oven and the flue gas desulfurization of Chemical Manufacture enterprise
Nitre.
The filling block can be directly placed in the container that flue gas passes through that (desulfurizing tower is de- in flue gas desulfurization and denitrification
Nitre tower)；One sparge pipe is set in upper vessel portion, water is used to collect the crystal of filler surface generation during adsorption reaction.
The yield ratio of the sulphur, nitre compound that generate in the amount of filler and production process is 0.6-1:1.
The filling block needs to be passed through oxygen when flue gas is passed through filling container in processing flue-gas denitration process.?
During desulphurization denitration, nitric oxide and nitrogen dioxide, since nitric oxide is difficult to be oxidized magnesium absorption, oxygen, which is added, can make one
Nitrogen oxide is changed into nitrogen dioxide, achievees the purpose that denitration.
Beneficial effects of the present invention.
In the present invention, each raw material is mixed by mechanical stirring, and solid mass is made.By free of contamination dioxygen Water blown
After processing, magnesia and magnesium chloride generate porous chlorine O-Mg series, make inside filler to be porous structure, can effectively increase
Filled surface ratio；It adds phosphoric acid and improves the hardness of chlorine O-Mg series, while adding glass fibre at low cost, that intensity is high,
Increase the intensity of filling block.The filler of inner porosity is cut into polygonal shape by the present invention, makes flue gas sufficiently and filler
Contact；Solid packing object is placed in the container passed through containing flue gas (desulphurization and denitration tower), makes the filling block in flue gas and container
Adsorption reaction is generated, while the magnesium chloride of the crystallization water containing there are six in filler provides hydrone, makes in magnesia and flue gas
Sulphur compound or nitrogen compound chemically react, and in the Surface Creation crystalline solid magnesium sulfate or nitrogenous compound of filler, use
The washer jet for being mounted on the out of stock upper vessel portion of desulfurization carries out water spray processing, collects the crystal on surface.In sulfur removal technology, receive
After the Methods For Purification processing for collecting obtained magnesium sulfate routine, it can be used as chemical reagent and sold, price 300-400
Yuan/ton；In denitrating technique, the nitrogenous compound collected can be used for nitrogenous fertilizer, use after conventional Methods For Purification processing
Make the fertilizer of the crops such as plant, price is 180-260 yuan/ton；The production cost of filler of the present invention is 1200 yuan/ton, sale
Price is 2500-3000 yuan/ton, can effectively reduce flue gas absorption cost in this way, expand profit on sales space.
It is de- frequently with the wet flue gas in wet processing processing flue gas, such as 102886199 B of patent CN in the prior art
Sulphur, there are waste water handling problems, and initial cost is big, and operating cost is also higher.Especially in wet denitration technique, using a large amount of
Oxidant and the lye for neutralizing nitric acid, considerably increase the cost of fume treatment, such as common magnesium oxide solution spray process
Flue gas, 3000-4000 yuan/ton of processing cost；And there are waste water handling problems for gas liquid reaction, generate secondary pollution, it is easy to
The problem for generating desulphurization denitration equipment scaling and blocking.And filler of the invention handles flue gas, directly generates and ties in filler surface
Crystal can carry out two time selling by processing, will not bring maintenance of equipment, problem difficult in maintenance after crystalline solid is collected.
The present invention does not add the fluorite and calcium carbide of traditional desulfurizing agent, reach desulfurization effect it is excellent while, avoid this
Two kinds of components are in sweetening process to operator's bring body harm.
Contain 1000-3000 mg/m in general flue gas3Sulphur and nitre.About flue gas desulfurization project, national emission standard is
200mg/m3Hereinafter, sulfur content is 20-100mg/m in the flue gas of discharge after carrying out fume treatment using filling block of the invention3；
The denitrating flue gas project, national emission standard 200mg/m3Hereinafter, carrying out fume treatment using filling block of the invention
Afterwards, amount containing nitre is 20-100mg/m in the flue gas of discharge3。
Detailed description of the invention
The out of stock equipment of Fig. 1 flue gas desulfurization；Wherein 1 is boiler, and 2 be smoke exhaust pipe, and 3 be deduster, and 4 be desulfurization or denitration
Tower, 5 be desulphurization denitration filler, and 6 be washer jet, and 7 be flushing water pump.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below.
Embodiment 1.
4 parts of MgO, MgCl2·6H26 parts of O, 0.1 part of phosphoric acid, 1 part of glass fibre, 0.5 part of adhesive neoprene rubber powder,
0.8 part of hydrogen peroxide.
The preparation method of the filler of the flue gas desulfurization and denitrification, includes the following steps.
(1) ingredient, stirring: proportion weighs magnesia, magnesium chloride, glass fibre, rubber powder and phosphoric acid in parts by weight, puts into
It is stirred in blender, agitation revolution 2000r/min, stirs 10 min；Then foaming agent is added, continues stirring 2 minutes.
(2) molding, foaming processing: the mixed material that step (1) is stirred is added in mold, after stand foaming 45min,
It is put into the constant temperature workshop that environment temperature is 50 DEG C, is stored 2 days, after increasing solidification intensity, takes out finished product, it is spare.
Filling block is directly placed in the container that flue gas passes through (desulfurizing tower or denitrating tower) in flue gas desulfurization and denitration technique；
One washer jet is set in upper vessel portion, sees Fig. 1.
Embodiment 2.
5 parts of MgO, MgCl2·6H25 parts of O, 0.5 part of phosphoric acid, 0.2 part of glass fibre, 0.8 part of nitrile rubber rubber powder, dioxygen
0.5 part of water.
Embodiment 3.
6 parts of MgO, MgCl2·6H2It is 8 parts of O, 0.4 part of phosphoric acid, 0.8 part of glass fibre, 1 part of Oppanol rubber powder, double
1 part of oxygen water.
One, Case Experiments On A.
1. test site: Zhangwu County.
2. test period: September 6th.
3. experimental condition: using the filler prepared with embodiment 1, handling the flue gas of 2 tons of coal-fired steam boilers discharge, wind
Amount is 10,000 air quantity, high 13 meters of desulphurization denitration tower diameter of phi 1200.
4. test result: being shown in Table 1.
Sulfur-nitrogen compound content before and after 1 fume treatment of table.
Claims (7)
1. a kind of filler for flue gas desulfurization and denitrification, which is characterized in that its raw material matches as follows in parts by weight: magnesia 4-
6 parts, 5-8 parts of magnesium chloride, 0.1-0.5 parts of phosphoric acid, 0.2-1 parts of glass fibre, 0.5-1 parts of adhesive, 0.5-1 parts of foaming agent；
Wherein, magnesium chloride is six water crystallization magnesium chlorides, wherein the crystallization water contained provides hydrone, is made in magnesium chloride and flue gas
Sulphur compound or nitrogen compound chemically react, and generate crystalline solid magnesium sulfide or nitrogenous compound in filler surface；
The filler of the flue gas desulfurization and denitrification, preparation method includes the following steps:
(1) ingredient, stirring: proportion weighs magnesia, magnesium chloride, glass fibre, adhesive and phosphoric acid in parts by weight, puts into and stirs
It mixes in device and stirs, agitation revolution 500-2000r/min stirs 10 min；Then foaming agent is added, continues stirring 2 minutes；
(2) molding, foaming processing: the mixed material that step (1) is stirred is added in mold, after stand foaming 20-50min,
It is put into the constant temperature workshop that environment temperature is 30-50 DEG C, is stored 1-3 days, after increasing solidification intensity, takes out finished product, it is spare.
2. filler as described in claim 1, which is characterized in that the concentration of the phosphoric acid is 85%, pH 5-6.
3. filler as described in claim 1, which is characterized in that the adhesive is rubber powder, specially neoprene, butyronitrile
Rubber or Oppanol.
4. filler as described in claim 1, which is characterized in that the foaming agent is hydrogen peroxide.
5. the filler as described in claim 1-4 is any, which is characterized in that be used for fuel boiler, gas fired-boiler, coke oven and change
The flue gas desulfurization and denitrification of work manufacturing enterprise.
6. the filler as described in claim 1-4 is any, which is characterized in that sulphur, nitre in the amount of filler and production process
The yield ratio of compound is 0.6-1:1.
7. the filler as described in claim 1-4 is any, which is characterized in that the filler processing flue-gas denitration process in,
It needs to be passed through oxygen when flue gas is passed through filling container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891343.0A CN106422746B (en) | 2016-10-13 | 2016-10-13 | A kind of filler and preparation method thereof for flue gas desulfurization and denitrification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891343.0A CN106422746B (en) | 2016-10-13 | 2016-10-13 | A kind of filler and preparation method thereof for flue gas desulfurization and denitrification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106422746A CN106422746A (en) | 2017-02-22 |
| CN106422746B true CN106422746B (en) | 2019-05-24 |
Family
ID=58173750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610891343.0A Active CN106422746B (en) | 2016-10-13 | 2016-10-13 | A kind of filler and preparation method thereof for flue gas desulfurization and denitrification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106422746B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042052A (en) * | 2017-04-05 | 2017-08-15 | 辽宁北环净化技术有限公司 | A kind of dry desulfurization denitrification integral handling process |
| CN108970333A (en) * | 2018-08-17 | 2018-12-11 | 辽宁北环净化技术有限公司 | GSW desulphurization denitration highly effective reaction device |
| CN109833768B (en) * | 2019-04-11 | 2022-03-15 | 河南润兴环保材料有限公司 | Porous water-fixing desulfurization block for electrolytic aluminum flue gas desulfurization and preparation method thereof |
| CN110252252A (en) * | 2019-06-21 | 2019-09-20 | 辽宁北环净化技术有限公司 | A kind of preparation method of NGFX dry desulfurization absorption brick |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1580203A (en) * | 2003-08-04 | 2005-02-16 | 煤炭科学研究总院北京煤化工研究分院 | Method for increasing strength and water resistance of desulfurizing agent |
| CN102114384A (en) * | 2011-01-21 | 2011-07-06 | 洛阳万山高新技术应用工程有限公司 | Flue gas denitration addition agent |
| CN104046378A (en) * | 2013-03-13 | 2014-09-17 | 中国石油天然气股份有限公司 | Preparation method of water-resistant iron oxide-based desulfurizer |
| CN105126563A (en) * | 2015-08-24 | 2015-12-09 | 秦皇岛玻璃工业研究设计院 | Desulfurization and denitrification medium for glass melter smoke and desulfurization and denitrification equipment and method |
-
2016
- 2016-10-13 CN CN201610891343.0A patent/CN106422746B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1580203A (en) * | 2003-08-04 | 2005-02-16 | 煤炭科学研究总院北京煤化工研究分院 | Method for increasing strength and water resistance of desulfurizing agent |
| CN102114384A (en) * | 2011-01-21 | 2011-07-06 | 洛阳万山高新技术应用工程有限公司 | Flue gas denitration addition agent |
| CN104046378A (en) * | 2013-03-13 | 2014-09-17 | 中国石油天然气股份有限公司 | Preparation method of water-resistant iron oxide-based desulfurizer |
| CN105126563A (en) * | 2015-08-24 | 2015-12-09 | 秦皇岛玻璃工业研究设计院 | Desulfurization and denitrification medium for glass melter smoke and desulfurization and denitrification equipment and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106422746A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106422746B (en) | A kind of filler and preparation method thereof for flue gas desulfurization and denitrification | |
| US5900042A (en) | Method for the removal of elemental mercury from a gas stream | |
| US4612174A (en) | Method of removing noxious substances from gases | |
| CA3059554C (en) | Systems and processes for removing hydrogen sulfide from gas streams | |
| US7682520B2 (en) | Composition and method for chelated scavenging compounds | |
| JPH0255095B2 (en) | ||
| CN105457486A (en) | Coke oven flue gas integrated treatment method | |
| CN101785962B (en) | Method for removing acid gas from waste gas | |
| PT1109614E (en) | PROCESS FOR CONTROLLING AMMONIA SPILL IN THE REDUCTION OF SULFUR DIOXIDE EMISSION | |
| EP1461136B1 (en) | Solution and method for scavenging sulphur compounds | |
| CN107303463A (en) | The innoxious removing low concentration of NO of high-gravity technologyxMethod | |
| Barbooti et al. | Removal of nitrogen dioxide and sulfur dioxide from air streams by absorption in urea solution | |
| CN206027335U (en) | Compound fertilizer production acidic tail gas's processing apparatus | |
| CN102389789B (en) | Catalyst for degrading COD (chemical oxygen demand) and sulfides in desulfurization waste liquid vapor as well as preparation method and application thereof | |
| CN106890544A (en) | Sodium base desulphurization denitration absorbent and preparation method thereof | |
| CN102527202A (en) | Process and equipment for desulfurizing sulfur-containing waste gas and recovering elemental sulfur | |
| CN109045963B (en) | Method for removing gaseous selenium dioxide in coal-fired flue gas through oxidation-absorption | |
| CN103506003B (en) | A kind of CO coupling synthesizing dimethyl oxalate process tail gas processing method | |
| CN206762619U (en) | Flue gas desulfurization and denitrification integrated apparatus | |
| CN107551784A (en) | Sulfur recovery facility tail gas from absorption tower handling process | |
| JPH11267450A (en) | Waste gas purifying method and waste gas purifier | |
| Livengood et al. | Process for combined control of mercury and nitric oxide. | |
| CN106823747A (en) | Calcium and magnesium base desulphurization denitration absorbent | |
| CN204724012U (en) | A kind of Dual alkali absorption plant purifying nox contained waste gas | |
| CN107413218B (en) | Carbon dioxide and oxygen gas mixing device and mixed gas combustion-supporting pollution gas zero discharge system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Desheng Inventor before: Li Desheng Inventor before: Wang Huiqiang |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |