CN106082288B - Utilize magnesium sulfate magnesium sulfite waste residue regenerating oxidation magnesium and recovery acid complexes - Google Patents
Utilize magnesium sulfate magnesium sulfite waste residue regenerating oxidation magnesium and recovery acid complexes Download PDFInfo
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- CN106082288B CN106082288B CN201610645061.2A CN201610645061A CN106082288B CN 106082288 B CN106082288 B CN 106082288B CN 201610645061 A CN201610645061 A CN 201610645061A CN 106082288 B CN106082288 B CN 106082288B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
Magnesium sulfate magnesium sulfite waste residue regenerating oxidation magnesium and recovery acid complexes, including feeder, venturi blender, material multi cyclone preheating device, suspension roaster, Conveyance device, material multi whirlwind cooling device, pressure fan, fuel nozzle, absorbing liquid enrichment facility, waste gas dust-removal device, air-introduced machine, apparatus for absorbing SO 2, desulfurizer, doctor solution elevator pump, absorbing liquid elevator pump, acid storage tank are utilized the invention discloses a kind of.Present invention comprises whole elements of the production processes such as granular material preparation, feeding discharging, shower roasting, pre- heat utilization, exhaust-gas treatment；Product Activity is high, and granularity is small, high-quality, and value is big；Utilization rate of waste heat is high, and efficient, effect is good, and waste gas outlet temperature and drop temperature reach 120 DEG C or less；Low energy consumption, and material waste heat and hot waste gas waste heat make full use of, and greatly reduce energy consumption；Green production, closing production, exhaust gas qualified discharge after processing；Production technology is advanced, and production efficiency is high, and effect is good, stable, easy to operate.
Description
Technical field
The present invention relates to the process fields of solid waste.
Background technology
Magnesite belongs to national grand strategy resource.China's magnesite ore reserves accounts for about the 24% of world saving, occupies world head
Position.China is magnesite resource and magnesian big producer, and the product of magnesite production mainly has light calcined magnesia, reheating oxidation
Magnesium and electrically molten magnesia.Light calcined magnesia is the active product that magnesite is obtained at 800 DEG C or so, is mainly used for flue gas
The raw material etc. of the acid neutralizing agents such as desulfurization, water process and ceramics, fine chemistry industry.Dead burned magnesia is that magnesite is obtained at 1700 DEG C or so
The deactivated product arrived, is mainly used for refractory material.Electrically molten magnesia is losing of being obtained at 2500 DEG C or so of magnesite
Active product, is mainly used for high grade refractory.
It is estimated that China's coal power generation flue gas magnesium processes wet type desulfurizing needs 7,000 ten thousand tons of light calcined magnesia, the sulfuric acid of generation every year
200,000,000 tons of magnesium magnesium sulfite waste material.Magnesium sulfate Asia may be used as process hides, explosive, papermaking, porcelain, fertilizer, and medically takes orally and rush down
Medicine etc..Magnesium sulfate measures fertilizer in being used in agricultural, is normally used for the crops and potted plant of magnesium deficiency, used also as bath
Salt.It discards or utilizes currently, the magnesium sulfate magnesium sulfite waste material that China's flue gas magnesium processes wet type desulfurizing generates all mixes cinder, utilize
It is worth very low, has no report and data that other are utilized.
Invention content
Technical problem solved by the invention be to provide it is a kind of using magnesium sulfate magnesium sulfite waste residue regenerating oxidation magnesium and return
Sour complexes are received, overcome the shortcomings of that magnesium sulfate magnesium sulfite waste material utility value is low in the prior art.
The technical solution adopted by the present invention is, using magnesium sulfate magnesium sulfite waste residue regenerating oxidation magnesium and recovery acid at suit
It sets, including feeder, venturi blender, material multi cyclone preheating device, suspension roaster, Conveyance device, material
Multistage cyclone cooling device, pressure fan, fuel nozzle, absorbing liquid enrichment facility, waste gas dust-removal device, air-introduced machine, sulfur dioxide
Absorption plant, desulfurizer, doctor solution elevator pump, absorbing liquid elevator pump, acid storage tank；
Conveyance device includes round cylinder, and cylinder side wall is equipped with gas material import, the air inlet side of gas material import
To avoiding cylinder axis, it is equipped with aggregate bin below cylinder clockwise or counterclockwise, cylinder, under aggregate bin
Side is discharge port, and cylinder center is equipped with gas collecting tube, and cylinder is stretched out in gas collecting tube upper end upwards；
Material multi cyclone preheating device is interconnected to constitute by multiple Conveyance devices；
Material multi whirlwind cooling device is also interconnected to constitute by multiple Conveyance devices；
Magnesium sulfate magnesium sulfite waste residue granular material is sent into venturi blender by feeder, is simultaneously from material multi rotation
The hot waste gas of wind preheating device also enters venturi blender, and material enters the pre- hot charging of material multi whirlwind after being mixed with hot waste gas
The first order set utilizes hot waste gas waste heat preheating material, the preheating of material graded, afterbody preheating material to enter suspension roaster
It carries out entering Conveyance device after flash resolves into magnesia and sulfur dioxide, the magnesia separated enters material multi
The first order cooling down of whirlwind cooling device, the cooling of thermal oxide magnesium graded, afterbody cool down magnesia discharging；Air is by sending
The afterbody that wind turbine is sent into material multi whirlwind cooling device absorbs heat heating, the preheating of air graded, object from thermal material
The preheated air of the material multistage cyclone cooling device first order enters suspension roaster, and the fuel sprayed with fuel nozzle reacts
Generating heat material makes its flash decompose, and decomposes the sulfur dioxide of generation and the hot waste gas after burning enters Conveyance dress
It sets, the hot waste gas separated enters the afterbody cooling of material multi cyclone preheating device, the cooling of hot waste gas graded, material
The first order cooling exhaust gas of multistage cyclone preheating device enters sulfur dioxide absorbing liquid enrichment facility and carries out vapor liquid heat exchange, into one
Step reduces exhaust gas temperature, and exhaust gas enters dust-extraction unit dedusting later, and the exhaust gas of dedusting enters sulfur dioxide by air-introduced machine and absorbs
Device, sulfur dioxide, which is transferred in water, forms sulfurous acid, and exhaust gas enters desulfurizer and carries out desulfurization process, handles heel row up to standard
It puts；Partial desulfurization liquid is promoted through doctor solution elevator pump as sulfur dioxide absorbing liquid and is sent into apparatus for absorbing SO 2 absorption dioxy
Change sulphur, the absorbing liquid after sulfur dioxide absorption enters absorbing liquid enrichment facility through absorbing liquid elevator pump and is evaporated concentration, concentrates
Liquid enters acid storage tank, and boil-off gas returns to apparatus for absorbing SO 2.
Using magnesium sulfate magnesium sulfite waste residue as raw material regenerating oxidation magnesium and recovery acid.
The beneficial effects of the invention are as follows Product Activity height, and granularity is small, high-quality, and value is big；Utilization rate of waste heat is high, efficiency
Height, effect is good, and waste gas outlet temperature and drop temperature reach 120 DEG C or less；Low energy consumption, and material waste heat and hot waste gas waste heat fill
Divide and utilize, greatly reduces energy consumption；Green production, closing production, exhaust gas qualified discharge after processing；Production technology is advanced, raw
Produce efficient, effect is good, stable, easy to operate.
Description of the drawings
Fig. 1 is to utilize magnesium sulfate magnesium sulfite waste residue regenerating oxidation magnesium and recovery acid complexes schematic diagram.
Fig. 2 is gas material process chart of the present invention.
Reference numeral：1- feeders, 2- venturi blender, 3- material multis cyclone preheating device, 4- suspension roasters,
5- Conveyances device, 6- material multi whirlwind cooling device, 7- pressure fan, 8- fuel nozzles, 81- fuel inlets, 9- absorb
Liquid enrichment facility, 10- dust-extraction units, 11- air-introduced machines, 12- apparatus for absorbing SO 2,13- desulfurizers, 14- doctor solutions carry
Rise pump, 15- absorbing liquids elevator pump, 16- acid storage tanks.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
Complexes be using magnesium sulfate magnesium sulfite waste residue as the basic equipment of raw material regenerating oxidation magnesium and recovery acid,
Integrated advanced technology grasps procedure parameter using magnesium sulfate magnesium sulfite waste residue as raw material regenerating oxidation magnesium and recovery acid
One of key technology.
The complexes of the present invention are by feeder, venturi blender, material multi cyclone preheating device, suspension roasting
Stove, Conveyance device, material multi whirlwind cooling device, pressure fan, fuel nozzle, absorbing liquid enrichment facility, waste gas dedusting
Device, air-introduced machine, apparatus for absorbing SO 2, desulfurizer, doctor solution elevator pump, absorbing liquid elevator pump, acid storage tank composition.
Invention is further described with reference to embodiment.Attached drawing is embodiment schematic diagram, in the present embodiment, magnesium sulfate
Magnesium sulfite waste residue granular material is sent into venturi blender 2 by feeder 1, and material enters material three-level after being mixed with hot waste gas
The first order of cyclone preheating device 3 utilizes hot waste gas waste heat preheating material, the preheating of material graded, afterbody preheating material to enter
Suspension roaster 4 carries out entering Conveyance device 5, the magnesia separated after flash resolves into magnesia and sulfur dioxide
Into the first order cooling down of material three-level whirlwind cooling device 6, the cooling of thermal oxide magnesium graded, afterbody cools down magnesia
Discharging.
The afterbody that air is sent into material three-level whirlwind cooling device 6 by pressure fan 7 absorbs heat liter from thermal material
Temperature, the preheating of air graded, the preheated air of 6 first order of three-level whirlwind cooling device enters suspension roaster 4, with fuel nozzle 8
The fuel of ejection, which reacts, to be generated heat material its flash is made to decompose, the sulfur dioxide for decomposing generation and the heat after burning
Exhaust gas enters Conveyance device 5, and the hot waste gas separated enters the afterbody drop of material three-level cyclone preheating device 3
The first order cooling exhaust gas of temperature, the cooling of hot waste gas graded, material three-level cyclone preheating device 3 enters the concentration of sulfur dioxide absorbing liquid
Device 9 carries out vapor liquid heat exchange, further decreases exhaust gas temperature.
Exhaust gas enters 10 dedusting of dust-extraction unit later, and the exhaust gas of dedusting enters apparatus for absorbing SO 2 by air-introduced machine 11
12, sulfur dioxide, which is transferred in water, forms sulfurous acid, and exhaust gas enters desulfurizer 13 and carries out desulfurization process, handles heel row up to standard
It puts；Partial desulfurization liquid carries 14 liters through doctor solution elevator pump as sulfur dioxide absorbing liquid and is sent into the absorption of apparatus for absorbing SO 2 12
Sulfur dioxide, absorbing liquid after sulfur dioxide absorption through absorbing liquid elevator pump 15 enter absorbing liquid enrichment facility 9 be evaporated it is dense
Contracting, concentrate enter acid storage tank 16, and boil-off gas returns to apparatus for absorbing SO 2 12.
This complexes realizes and utilizes magnesium sulfate magnesium sulfite waste residue regenerating oxidation magnesium and recovery acid on a large scale, and equipment is first
Into integration ofTechnology degree height, production technology is advanced, and production efficiency is high, and effect is good, stable, easy to operate；Product Activity is high, grain
Spend small, high-quality, value is big；Material waste heat and hot waste gas waste heat make full use of, and greatly reduce energy consumption；Waste gas outlet temperature
It is low, closing production, exhaust gas qualified discharge after processing, green production.
This complexes has following features：
1. utilizing magnesium sulfate magnesium sulfite waste residue regenerating oxidation magnesium and recovery acid on a large scale
2. complexes include that granular material preparation, feeding discharging, shower roasting, pre- heat utilization, exhaust-gas treatment etc. are raw
Whole elements of production process；
3. advanced technology integrated level is high, be integrated with shower roasting, pre- heat utilization, exhaust-gas treatment advanced technology；
4. Product Activity is high, granularity is small, high-quality, and value is big；
5. utilization rate of waste heat is high, efficient, effect is good, and waste gas outlet temperature and drop temperature reach 120 DEG C or less；
6. low energy consumption, material waste heat and hot waste gas waste heat make full use of, and greatly reduce energy consumption；
7. green production, closing production, exhaust gas qualified discharge after processing；
8. production technology is advanced, production efficiency is high, and effect is good, stable, easy to operate.
Claims (1)
1. utilizing magnesium sulfate magnesium sulfite waste residue regenerating oxidation magnesium and recovery acid complexes, it is characterised in that：Including feeder,
Venturi blender, material multi cyclone preheating device, suspension roaster, Conveyance device, material multi whirlwind cooling dress
Set, pressure fan, fuel nozzle, absorbing liquid enrichment facility, waste gas dust-removal device, air-introduced machine, apparatus for absorbing SO 2, desulfurization dress
It sets, doctor solution elevator pump, absorbing liquid elevator pump, acid storage tank；
Conveyance device includes round cylinder, and cylinder side wall is equipped with gas material import, and the airintake direction of gas material import is kept away
Cylinder axis is opened, aggregate bin is equipped with below cylinder clockwise or counterclockwise, cylinder, is below aggregate bin
Discharge port, cylinder center are equipped with gas collecting tube, and cylinder is stretched out in gas collecting tube upper end upwards；
Material multi cyclone preheating device (3) is interconnected to constitute by multiple Conveyance devices；
Material multi whirlwind cooling device (6) is also interconnected to constitute by multiple Conveyance devices；
Magnesium sulfate magnesium sulfite waste residue granular material is sent into venturi blender (2) by feeder (1), is simultaneously from material multi
The hot waste gas of cyclone preheating device (3) also enters venturi blender (2), and material enters material multi after being mixed with hot waste gas and revolves
The first order of wind preheating device (3) utilizes hot waste gas waste heat preheating material, the preheating of material graded, afterbody preheating material to enter
Suspension roaster (4) carries out entering Conveyance device (5), the oxygen separated after flash resolves into magnesia and sulfur dioxide
Change the first order cooling down that magnesium enters material multi whirlwind cooling device (6), the cooling of thermal oxide magnesium graded, afterbody cooling
Magnesia discharges；The afterbody that air is sent into material multi whirlwind cooling device (6) by pressure fan (7) is absorbed from thermal material
Heat heats up, and air graded preheating, the preheated air of material multi whirlwind cooling device (6) first order enters suspension roaster
(4), the generation heat material that reacts with the fuel of fuel nozzle (8) ejection makes its flash decompose, and decomposes the two of generation
Hot waste gas after sulfur oxide and burning enters Conveyance device (5), and it is pre- that the hot waste gas separated enters material multi whirlwind
The afterbody of thermal (3) cools down, the cooling of hot waste gas graded, and the first order cooling of material multi cyclone preheating device (3) is useless
Gas enters sulfur dioxide absorbing liquid enrichment facility (9) and carries out vapor liquid heat exchange, further decreases exhaust gas temperature, and exhaust gas enters later
The exhaust gas of dust-extraction unit (10) dedusting, dedusting enters apparatus for absorbing SO 2 (12) by air-introduced machine (11), and sulfur dioxide turns
It moves on to and forms sulfurous acid in water, exhaust gas enters desulfurizer (13) and carries out desulfurization process, handles rear discharge up to standard；Partial desulfurization liquid
It is promoted through doctor solution elevator pump (14) as sulfur dioxide absorbing liquid and is sent into apparatus for absorbing SO 2 (11) sulfur dioxide absorption,
Absorbing liquid after sulfur dioxide absorption is evaporated concentration through absorbing liquid elevator pump (15) into absorbing liquid enrichment facility (9), dense
Contracting liquid enters acid storage tank (16), and boil-off gas returns to apparatus for absorbing SO 2 (12)；
Using magnesium sulfate magnesium sulfite waste residue as raw material regenerating oxidation magnesium and recovery acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610645061.2A CN106082288B (en) | 2016-08-08 | 2016-08-08 | Utilize magnesium sulfate magnesium sulfite waste residue regenerating oxidation magnesium and recovery acid complexes |
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|---|---|---|---|
| CN201610645061.2A CN106082288B (en) | 2016-08-08 | 2016-08-08 | Utilize magnesium sulfate magnesium sulfite waste residue regenerating oxidation magnesium and recovery acid complexes |
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| CN106082288A CN106082288A (en) | 2016-11-09 |
| CN106082288B true CN106082288B (en) | 2018-09-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109052438B (en) * | 2018-07-12 | 2019-04-02 | 山东汇泰再生资源有限公司 | It is a kind of to prepare method of magnesium oxide using magnesium sulfite |
| CN110921633B (en) * | 2019-10-30 | 2021-05-28 | 郑州轻工业学院 | Method for recycling byproducts of magnesium oxide wet flue gas desulfurization of power station |
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| CN103111187B (en) * | 2013-02-06 | 2015-02-04 | 盛尼克能源环保技术(重庆)有限公司 | System and method for regenerating magnesium oxides and sulfur dioxides through decomposition of magnesium oxide desulphurization by-products |
| CN103265053A (en) * | 2013-06-13 | 2013-08-28 | 江苏远东环保工程有限公司 | Method for recycling sulfate from desulfurization waste liquor and equipment system for implementing method |
| CN103435277B (en) * | 2013-08-23 | 2015-10-21 | 北京科太亚洲生态科技有限公司 | A kind of internal combustion gas-burned vertical limekiln for the production of light calcined magnesia and method |
| CN105197968A (en) * | 2015-09-15 | 2015-12-30 | 中国科学院过程工程研究所 | Method and device for producing high-purity magnesium oxide and co-producing industrial concentrated hydrochloric acid through partially hydrated magnesium chloride fluidization pyrolysis |
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