CN106281570A - One is prepared additive for fire coal with blast furnace gas mud as a raw material and is reduced PM2.5the method of discharge - Google Patents
One is prepared additive for fire coal with blast furnace gas mud as a raw material and is reduced PM2.5the method of discharge Download PDFInfo
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- CN106281570A CN106281570A CN201610680422.7A CN201610680422A CN106281570A CN 106281570 A CN106281570 A CN 106281570A CN 201610680422 A CN201610680422 A CN 201610680422A CN 106281570 A CN106281570 A CN 106281570A
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- blast furnace
- furnace gas
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
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Abstract
The invention discloses one and prepare additive for fire coal reduction PM with blast furnace gas mud as a raw material2.5The method of discharge, belongs to solid waste and utilizes and pollution control technology field.The method obtains the solution containing particles such as Fe, Ca, Al, Mg by the chemical precipitation method of acidolysis and PH regulation in blast furnace gas mud, this solution oxide is obtained Multi-component ion solutions and precipitate, then dry under oxygen or air atmosphere and obtain additive for fire coal, finally according to mass ratio 2～the adding proportion participation fire coal reduction PM of 10%2.5Discharge.Compared with traditional method, the additive that the present invention utilizes blast furnace gas mud to prepare adds coal-fired process, can effectively reduce PM2.5Discharge, and Fe, Ca, Al, Mg element used in additive is all from metallurgy high furnace gas mud, thus overcomes prior art and rely on merely the limitation of chemical reagent and first resource, is reducing coal-fired PM2.5While discharge costs, also provide new way for blast furnace gas mud resource and high value added utilization.
Description
Technical field
The invention belongs to solid waste utilize and technical field of emission reduction, being specifically related to a kind of is former with blast furnace gas mud
Material, participates in fire coal and reduces PM2.5A kind of method of discharge.
Background technology
At present, China's major part city is perplexed by haze weather, and situation is day by day serious, and endangers human health
PM2.5Source resolution show, owing to China is with coal as main energy sources, fire coal becomes PM in air2.5One of main source.Mesh
Before, coal-burning power plant of China generally uses gas cleaning granular material discharged to control, use most be high-voltage electrostatic dust separator and
Sack cleaner, although two kinds of devices are preferable to the removal effect of flue dust, but controlling PM2.5Discharge aspect and China's thermoelectricity dirt
The high situation polluting aggravation with region gray haze of dye source density is compared, and still suffers from certain gap；And utilize additive for fire coal from source
Suppression PM2.5Generation and discharge have important reality and Future Significance, be presently used for controlling coal-fired PM2.5The interpolation of discharge
Agent is broadly divided into three kinds: calcio, magnesio and mineral composite.Calcium based additives is mainly limestone (CaCO3), calcite
(CaO3) and CaO, magnesio is mainly MgO, and mineral composite adsorbent mainly has grey matter dolomite (CaMg [CO3] 2, or
CaCO3.MgCO3), Kaolin (Al2O3,SiO2,Fe2O3), kieselguhr (SiO2), Alumina (Al2O3, Fe2O3.SiO2) etc., these
Solid absorbent can be that gaseous material provides condensing surface, simultaneously can also be volatile with traces of harmful heavy metal element and coal
The component generation chemical reaction of nucleation, thus suppress PM2.5Generation and discharge.But above-mentioned additive is and once provides
Source, has certain Financial cost, therefore, the dual difficult problem polluted for the atmospheric pollution of current China and solid waste, from " controlling with useless
Dirty " angle set out, find the solid waste " blast furnace gas mud " of metallurgical industry discharge, be difficult to because of complicated components high attached always
Value added utilization, but its key component Fe2O3、CaO、Al2O3、MgO、SiO2It is the component of above-mentioned additive for fire coal, not only can
Trace heavy metals in absorption coal, but also can easily generate PM in coal2.5The component such as silicate there is mutual work
With, reach collaborative suppression PM2.5Emission effect, this solid waste system is applied to administer coal-fired PM2.5Research in terms of pollution
Yet there are no and report for work.Therefore, blast furnace gas mud possesses as additive participation fire coal reduction PM2.5The basis of discharge.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of with blast furnace gas mud for the coal-fired PM of primary raw material preparation2.5Add
The method adding agent, to overcoming tradition additive for fire coal raw material to rely on merely the limitation of chemical reagent and first resource, for blast furnace
Gas mud resource multicomponent high value added utilization provides new way, also for controlling coal-fired PM2.5Discharge new technology road is provided
Line.
In order to solve above technical problem, the present invention is achieved by the following technical programs.
The invention provides one and prepare additive for fire coal reduction PM with blast furnace gas mud as a raw material2.5The method of discharge, should
Method specifically comprises the following steps that
(1) first blast furnace gas mud carrying out ball milling, then with hydrochloric acidolysis, the pH value of acid hydrolysis solution, between 3～5, connects
In filtrate addition hydrogen peroxide, after liquid temp to be filtered rises to 90～100 DEG C, add ammonia regulation pH value to 6～7, react 1-
2h so that it is the element portions such as middle Fe, Ca separate out with hydroxide precipitation form, the solidliquid mixture drying blast furnace that will obtain
Gas mud base additive for fire coal；
(2) additive for fire coal prepared by step (1) is mixed homogeneously with coal according to mass ratio 2-10%, then fire
Burn.
As one optimization, in described step (1): with hydrochloric acidolysis regulation pH value to 3, liquid temp to be filtered rise to 90 DEG C it
Rear reaction 2h.
As one optimization, in described step (2): blast furnace gas mud base additive for fire coal is added according to mass ratio 6%
Mix homogeneously in coal, now efficiency of combustion and emission reduction effect are optimal.
As one optimization, in described step (1): the granularity after blast furnace gas mud ball milling reaches below 200 mesh.
The present invention is with blast furnace gas mud for the coal-fired PM of primary raw material preparation2.5Discharge inhibitor meal and the coal-fired method reduced discharging,
Its key problem in technology is that complex component in gas mud is decomposed by the method dissolved by acidifying, will wherein have suppression PM2.5Generate
Component Fe, Ca, Al etc. exist in acid hydrolysis solution with ionic forms, as preparation PM2.5The element source of additive, finally uses ammonification
The method of water precipitation obtains target product, and the iron containing compounds based on ferrum and the mixture of alkaline components.The method
The multicomponent inhibitor that feature is main component Fe with gas mud and prepared by Ca, its chemical composition is mainly FeCl3、Fe
(OH)3、Ca(OH)2,Mg(OH)2Deng, it is wherein FeCl3、Fe(OH)3、Ca(OH)2, total content is more than 90%, remaining microcomponent
The element being mixed into for other doped with trace elements in gas mud and acid hemolysis process, participates in burning to this additive and does not produce bright
Aobvious negative effect.
Compared with prior art, the present invention has following technical effect that
1, breaking through tradition uses chemical reagent and first resource to suppress PM as fire coal2.5The technology path of additive, and
With metallurgical solid waste-blast furnace gas mud as object of study, utilize the element such as key component Fe, Ca and Al in gas mud,
Use acidolysis coprecipitation, prepare the coal-fired PM of suppression2.5Additive, breach tradition additive for fire coal raw material simple
Rely on chemical reagent or the limitation of first resource, while reducing the coal fire discharged cost of control, for metallurgical solid waste-high tile
This mud resource high value added utilization provides new way；
2 and tradition use chemical reagent synthesis or the coal-fired PM of first resource2.5The performance of inhibitor is compared, the present invention
Blast furnace gas mud base fire coal PM prepared by described new method2.5Inhibitor has and preferably suppresses emission effect, by small-sized fluidisation
Bed combustion testing, emission reduction effect is obvious.
Accompanying drawing explanation
Fig. 1 is that the blast furnace gas mud based additive prepared by the embodiment of the present invention 2 participates in fire coal reduction PM2.5Discharge figure；
As seen from the figure, the amount of coal is added than increase, PM along with blast furnace gas mud based additive2.5Discharge capacity is decreased obviously,
Additive prepared by this explanation blast furnace gas mud adds coal-fired process, can effectively suppress PM2.5Discharge, but consider
Coal sample combustion heat value too much can be had a certain impact by blast furnace gas mud addition, so, gas mud base additive for fire coal is pressed
Adding in coal according to 6% ratio and mix, efficiency of combustion and emission reduction effect are optimal, thus demonstrate this additive and are reducing fire coal
PM2.5Feasibility in draining technology application.
Detailed description of the invention
Illustrate the present invention below by embodiment, but embodiment is not limiting as protection scope of the present invention.
Embodiment 1
Take 200g blast furnace gas mud, it is carried out ball milling so that it is granularity reaches below 200 mesh, add hydrochloric acidolysis, regulate PH
Being 3, heating makes solution be increased to 90 DEG C, adds the moisture evaporated in acid hemolysis process, keeps acidolysis liquid level constant, reacts after 3h
Terminate.It is subsequently adding deionized water and reaches about 1L to overall solution volume, in filtrate, add the hydrogen peroxide of 10ml respectively, to be filtered
When liquid temp rises to 90 DEG C, the ammonia of dropping 10ml, regulation pH=6 is precipitated product, after pH is stable, continues reaction 1h.
It is dried 5 hours at 100 DEG C during solidliquid mixture puts into drying baker afterwards, removes Free water, the blast furnace gas that finally will obtain
The pack of mud based additive sample is standby.
Embodiment 2
Take 200g blast furnace gas mud, it is carried out ball milling so that it is granularity reaches below 200 mesh, add hydrochloric acidolysis, regulate PH
Being 4, heating makes solution be increased to 90 DEG C, adds the moisture evaporated in acid hemolysis process, keeps acidolysis liquid level constant, reacts after 3h
Terminate.It is subsequently adding deionized water and reaches about 1L to overall solution volume, in filtrate, add the hydrogen peroxide of 10ml respectively, to be filtered
When liquid temp rises to 90 DEG C, the ammonia of dropping 15ml, regulation pH=7 is precipitated product, after pH is stable, continues reaction
1.5h.It is dried 5 hours at 100 DEG C during solidliquid mixture puts into drying baker afterwards, removes Free water, the blast furnace that finally will obtain
The pack of gas mud additive samples is standby.
Embodiment 3
Take 200g blast furnace gas mud, it is carried out ball milling so that it is granularity reaches below 200 mesh, add hydrochloric acidolysis, regulate PH
Being 5, heating makes solution be increased to 90 DEG C, adds the moisture evaporated in acid hemolysis process, keeps acidolysis liquid level constant, reacts after 3h
Terminate.It is subsequently adding deionized water and reaches about 1L to overall solution volume, in filtrate, add the hydrogen peroxide of 10ml respectively, to be filtered
When liquid temp rises to 90 DEG C, the ammonia of dropping 15ml, regulation pH=7 is precipitated product, after pH is stable, continues reaction 2h.
It is dried 5 hours at 100 DEG C during solidliquid mixture puts into drying baker afterwards, removes Free water, the blast furnace gas that finally will obtain
The pack of mud additive samples is standby.
Embodiment 4
Being mixed with 490g coal by the 10g blast furnace gas mud base additive for fire coal of preparation in embodiment 2, gas mud content accounts for
Mixing coal sample 2%, then biased sample is put in tube furnace, under air atmosphere (flow is 30mL/min) with 10 DEG C/
Min heating rate is heated to 100 DEG C and constant temperature 30min from room temperature, to guarantee that sample is completely dried, then heats up speed with 10 DEG C/min
Rate is heated to 900 DEG C and constant temperature 20mins, to ensure that coal fully burns, uses particulate matter measuring instrument to connect coil outlet and carries out
PM2.5Detection.
Embodiment 5
Being mixed with 470g coal by the 30g blast furnace gas mud base additive for fire coal of preparation in embodiment 2, gas mud content accounts for
Mixing coal sample 6%, then biased sample is put in tube furnace, under air atmosphere (flow is 30mL/min) with 10 DEG C/
Min heating rate is heated to 100 DEG C and constant temperature 30min from room temperature, to guarantee that sample is completely dried, then heats up speed with 10 DEG C/min
Rate is heated to 900 DEG C and constant temperature 20mins, to ensure that coal fully burns, uses particulate matter measuring instrument to connect coil outlet and carries out
PM2.5Detection.
Embodiment 6
Being mixed with 460g coal by the 40g blast furnace gas mud base additive for fire coal of preparation in embodiment 2, gas mud content accounts for
Mixing coal sample 8%, then biased sample is put in tube furnace, under air atmosphere (flow is 30mL/min) with 10 DEG C/
Min heating rate is heated to 100 DEG C and constant temperature 30min from room temperature, to guarantee that sample is completely dried, then heats up speed with 10 DEG C/min
Rate is heated to 900 DEG C and constant temperature 20mins, to ensure that coal fully burns, uses particulate matter measuring instrument to connect coil outlet and carries out
PM2.5Detection.
Embodiment 7
Being mixed with 450g coal by the 50g blast furnace gas mud base additive for fire coal of preparation in embodiment 2, gas mud content accounts for
Mixing coal sample 10%, then biased sample is put in tube furnace, under air atmosphere (flow is 30mL/min) with 10 DEG C/
Min heating rate is heated to 100 DEG C and constant temperature 30min from room temperature, to guarantee that sample is completely dried, then heats up speed with 10 DEG C/min
Rate is heated to 900 DEG C and constant temperature 20mins, to ensure that coal fully burns, uses particulate matter measuring instrument to connect coil outlet and carries out
PM2.5Detection.
Claims (4)
1. prepare additive for fire coal reduction PM with blast furnace gas mud as a raw material for one kind2.5The method of discharge, it is characterised in that the party
Method specifically comprises the following steps that
(1) first blast furnace gas mud is carried out ball milling, then with hydrochloric acidolysis, the pH value of acid hydrolysis solution between 3～5, then to
In filtrate add hydrogen peroxide, after liquid temp to be filtered rises to 90～100 DEG C, add ammonia regulation pH value to 6～7, react 1-2h, will
The solidliquid mixture drying blast furnace gas mud base additive for fire coal obtained；
(2) additive for fire coal prepared by step (1) is mixed homogeneously with coal according to mass ratio 2-10%, then burn.
2. one as claimed in claim 1 prepares additive for fire coal reduction PM with blast furnace gas mud as a raw material2.5The side of discharge
Method, it is characterised in that in described step (1): with hydrochloric acidolysis regulation pH value to 3, liquid temp to be filtered reacts after rising to 90 DEG C
2h。
3. one as claimed in claim 1 prepares additive for fire coal reduction PM with blast furnace gas mud as a raw material2.5The side of discharge
Method, it is characterised in that in described step (2): blast furnace gas mud base additive for fire coal is added in coal mixed according to mass ratio 6%
Close uniformly.
4. one as claimed in claim 1 prepares additive for fire coal reduction PM with blast furnace gas mud as a raw material2.5The side of discharge
Method, it is characterised in that in described step (1): the granularity after blast furnace gas mud ball milling reaches below 200 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610680422.7A CN106281570A (en) | 2016-08-17 | 2016-08-17 | One is prepared additive for fire coal with blast furnace gas mud as a raw material and is reduced PM2.5the method of discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610680422.7A CN106281570A (en) | 2016-08-17 | 2016-08-17 | One is prepared additive for fire coal with blast furnace gas mud as a raw material and is reduced PM2.5the method of discharge |
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| Publication Number | Publication Date |
|---|---|
| CN106281570A true CN106281570A (en) | 2017-01-04 |
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ID=57679105
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610680422.7A Pending CN106281570A (en) | 2016-08-17 | 2016-08-17 | One is prepared additive for fire coal with blast furnace gas mud as a raw material and is reduced PM2.5the method of discharge |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007112561A1 (en) * | 2006-03-31 | 2007-10-11 | Atlantic Combustion Technologies Inc. | Increasing the efficiency of combustion processes |
| CN102373105A (en) * | 2010-08-20 | 2012-03-14 | 郭仕民 | Fire coal or inferior coal desulfurizer for sulfur fixation in circulating fluidized bed boiler |
| CN102827665A (en) * | 2012-09-10 | 2012-12-19 | 武汉钢铁(集团)公司 | Coal saving and desulfurating combustion improver and preparation method thereof |
| CN103540382A (en) * | 2013-09-13 | 2014-01-29 | 华中科技大学 | Coal-burning additive for reducing emission of fine particles and heavy metals and preparation method thereof |
| CN104059714A (en) * | 2014-07-03 | 2014-09-24 | 安徽工业大学 | Method for preparing Fe2O3/Al2O3 oxygen carrier by taking ferrous metallurgy dust mud as main raw materials |
| CN104232231A (en) * | 2014-09-18 | 2014-12-24 | 济南宝华新能源技术有限公司 | Biomass-based fuel and preparation method |
-
2016
- 2016-08-17 CN CN201610680422.7A patent/CN106281570A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007112561A1 (en) * | 2006-03-31 | 2007-10-11 | Atlantic Combustion Technologies Inc. | Increasing the efficiency of combustion processes |
| CN102373105A (en) * | 2010-08-20 | 2012-03-14 | 郭仕民 | Fire coal or inferior coal desulfurizer for sulfur fixation in circulating fluidized bed boiler |
| CN102827665A (en) * | 2012-09-10 | 2012-12-19 | 武汉钢铁(集团)公司 | Coal saving and desulfurating combustion improver and preparation method thereof |
| CN103540382A (en) * | 2013-09-13 | 2014-01-29 | 华中科技大学 | Coal-burning additive for reducing emission of fine particles and heavy metals and preparation method thereof |
| CN104059714A (en) * | 2014-07-03 | 2014-09-24 | 安徽工业大学 | Method for preparing Fe2O3/Al2O3 oxygen carrier by taking ferrous metallurgy dust mud as main raw materials |
| CN104232231A (en) * | 2014-09-18 | 2014-12-24 | 济南宝华新能源技术有限公司 | Biomass-based fuel and preparation method |
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Application publication date: 20170104 |