CN108298507A - A kind of method and device handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant - Google Patents
A kind of method and device handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant Download PDFInfo
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- CN108298507A CN108298507A CN201810311598.4A CN201810311598A CN108298507A CN 108298507 A CN108298507 A CN 108298507A CN 201810311598 A CN201810311598 A CN 201810311598A CN 108298507 A CN108298507 A CN 108298507A
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- Prior art keywords
- petroleum coke
- pyrite
- sulfur
- sulphuric acid
- containing smoke
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
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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
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention discloses a kind of method handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant, a kind of device being handled calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant is disclosed simultaneously, including sequentially connected batcher, roasting system, residual neat recovering system, dust pelletizing system, acid elution tower, drying tower and Sulphuric acid device.The present invention realizes the utilization that calcining petroleum coke flue gas cooperates with troilite flue gas relieving haperacidity using production of sulfur from pyrite acid device, the products such as low-pressure steam and commerical grade sulfuric acid are obtained, and only generate the extremely a small amount of solid waste of machine, flue gas after absorption is up to standard to be discharged into air, not only realize the recycling of exhaust gas, and it is environmentally friendly, it kills two birds with one stone.
Description
Technical field
The invention belongs to aluminum electrolysis technology fields, and in particular to a kind of to handle calcining petroleum coke using pyrite-based sulphuric acid plant
The method and device of sulfur-containing smoke gas.
Background technology
In the development of scale, the enlargement of Aluminium Industry, prebaked anode material is to restrict an important factor for it develops,
And main material of the petroleum coke as anode material, accounting cause at present up to the 65% of anode weight to petroleum coke material
Demand is more and more vigorous.And crude oil heaviness phenomenon is also increasingly severe at present, causes the tail gas that calcining petroleum coke generates a large amount of
SO2Discharge.After existing technology mainly uses the heat in heat recovery technology comprehensive utilization flue gas, residual exhaust is through two-stage stone
Buck discharges after absorbing, and such method, equipment investment is larger, and operation expense is also higher, since calcining petroleum coke flue gas contains
Dirt is larger, and alkali desulphurization is also easy to produce a large amount of solid waste, causes the great wasting of resources.
Invention content
Goal of the invention：In view of the deficienciess of the prior art, utilizing pyrite-based sulfuric acid production the object of the present invention is to provide a kind of
The method that device handles calcining petroleum coke sulfur-containing smoke gas, while a kind of utilization pyrite-based sulphuric acid plant processing calcining petroleum coke being provided
The device of sulfur-containing smoke gas.
Technical solution：In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows：
The method for handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant recycles two using heat recovery boiler
Heat by-product low-pressure steam in sulfur oxide flue gas enters the absorb the bottom of the tower of Sulphuric acid device, absorbing liquid after dedusting drying
It sprays at the top of from absorption tower, is countercurrently reacted, the absorbing liquid for reacting completion is discharged from absorb the bottom of the tower pipeline；It filters and purifies
Obtain the pure concentrated sulfuric acid.The invention also discloses a kind of devices for implementing the above method.By the method for the invention and device
It uses, realizes the utilization that calcining petroleum coke flue gas cooperates with relieving haperacidity with troilite flue gas, obtained low-pressure steam and commerical grade sulphur
The products such as acid, specifically：
A method of calcining petroleum coke sulfur-containing smoke gas being handled using pyrite-based sulphuric acid plant, is included the following steps：
(1) raw petroleum coke is calcined to obtain ripe petroleum coke and high temperature sulfur dioxide flue gas, pyrite burning is obtained into thick oxygen
Change iron and high temperature sulfur dioxide flue gas；
(2) two-way high temperature sulfur dioxide flue gas respectively enters heat recovery boiler and carries out cooling acquisition low-pressure steam；
(3) after merging the two-way sulfur dioxide flue gas after cooling chalk dust removing is removed into dust pelletizing system；
(4) sulfur dioxide flue gas after chalk dust removing will be gone to be sent into after acid elution tower washs into drying tower drying；
(5) double-absorption technique finished product sulfuric acid will be used after the sulfur dioxide flue gas supplement fresh air after drying；
(6) tail gas generated after double-absorption technique is sent into tail gas absorber, is vented after Alkali absorption.
In step (1), sulfur content is 1~15% in raw petroleum coke, and calcination temperature is at 1100~1400 DEG C；Sulphur in troilite
Content is 10~40%, and calcination temperature is at 1100~1300 DEG C.
In step (2), sulfur dioxide flue gas is cooled to 120~180 DEG C.
Invention additionally discloses a kind of devices handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant, including according to
The batcher of secondary connection, roasting system, residual neat recovering system, dust pelletizing system, acid elution tower, drying tower and Sulphuric acid device, institute
It includes petroleum coke batcher and troilite batcher to state batcher, and the roasting system includes petroleum coke calciners and troilite roasting
Stove is burnt, residual neat recovering system includes the first heat recovery boiler and the second heat recovery boiler, the petroleum coke batcher, oil
Burnt calcining furnace and the first heat recovery boiler are sequentially connected, and the troilite batcher, pyrite furnace and the second waste heat return
It receives boiler to be sequentially connected, first heat recovery boiler and the second heat recovery boiler are connect with dust pelletizing system.
Preferably, the petroleum coke calciners are can-type calcine furnace, the pyrite furnace is fluidizing reactor.
Preferably, the dust pelletizing system includes cyclone dust collectors and electric precipitator.
Preferably, being provided with the first wind turbine and the first valve between the can-type calcine furnace and dust pelletizing system；Institute
It states and is provided with the second wind turbine and the second valve between fluidizing reactor and dust pelletizing system.
Preferably, being provided with air supplement wind turbine between the drying tower and Sulphuric acid device.
Preferably, the Sulphuric acid device is double-absorption device, double-absorption device includes converter, the first absorption
Tower and second absorption tower.
Preferably, being provided with heat exchanger between the drying tower and double-absorption device.
Advantageous effect：Compared with prior art, the present invention has the following advantages：
The method for handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant of the present invention, after calcining petroleum coke
The sulfur-containing smoke gas of generation is recycled, and calcining petroleum coke flue gas and troilite cigarette are realized using production of sulfur from pyrite acid device
Gas cooperates with the utilization of relieving haperacidity, has obtained the products such as low-pressure steam and commerical grade sulfuric acid, and only generates the extremely a small amount of solid of machine
Waste, flue gas after absorption is up to standard to be discharged into air, not only realizes the recycling of exhaust gas, and environmentally friendly, kills two birds with one stone.
Description of the drawings
Fig. 1 is the method and device flow chart using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas.
Specific implementation mode
The present invention is furture elucidated below in conjunction with the accompanying drawings.
As shown in Figure 1, the method for handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant of the application, including
Following steps：
(1) raw petroleum coke is calcined to obtain ripe petroleum coke and high temperature sulfur dioxide flue gas, pyrite burning is obtained into thick oxygen
Change iron and high temperature sulfur dioxide flue gas；
(2) two-way high temperature sulfur dioxide flue gas respectively enters heat recovery boiler and carries out cooling acquisition low-pressure steam；
(3) after merging the two-way sulfur dioxide flue gas after cooling chalk dust removing is removed into dust pelletizing system；
(4) sulfur dioxide flue gas after chalk dust removing will be gone to be sent into after acid elution tower washs into drying tower drying；
(5) double-absorption technique finished product sulfuric acid will be used after the sulfur dioxide flue gas supplement fresh air after drying；
(6) tail gas generated after double-absorption technique is sent into tail gas absorber, is vented after Alkali absorption.
In step (1), raw petroleum coke is added to can-type calcine furnace and is calcined, troilite be added after being crushed and is boiled
Stove is risen to be roasted.The ripe petroleum coke of the product of acquisition and thick iron oxide are entered into subsequent handling and continue processing and refining, high temperature
Sulfur dioxide flue gas enters heat recovery boiler and carries out heat exchange acquisition low-pressure steam.Sulfur content is 1~15% in raw petroleum coke, is forged
Temperature is burnt at 1100~1400 DEG C；Sulfur content is 10~40% in troilite, and calcination temperature is at 1100~1300 DEG C.
In step (2), sulfur dioxide flue gas is cold need to be but to removing chalk dust removing after 120~180 DEG C into dust pelletizing system.
In step (3), dust pelletizing system includes cyclone dust collectors and point deduster, sulfur dioxide flue gas after converging first into
Enter cyclone dust collectors, removes large-size particles object.Gas after cyclone dust removal enters electric precipitator and further removes particulate matter.
In step (4), the gas after electric precipitation enters acid elution tower washing further removal impurity, after acid elution flue gas into
Enter drying tower drying, removes moisture in gas.
In step (5), due to flue gas oxygen content flue gas oxygen content after 2%~5%, pyrite burning after calcining petroleum coke
5%~8%, and Sulphur Dioxide oxygen content needs 6~15%, therefore sulfur dioxide flue gas need to supplement fresh air to improve
Flue gas oxygen content.For example, pyrite burning exhaust gas volumn is in 55000~60000m3/ h, calcining petroleum coke exhaust gas volumn 25000~
30000m3/ h, then fresh air make up is in 5000~10000m3/h.It supplements the sulfur dioxide flue gas after fresh air and uses two
Turn two to inhale technique by Sulphur Dioxide to be sulfur trioxide, the gas after conversion enters absorption tower finished product grade sulfuric acid.
Invention additionally discloses the realization above method calcining petroleum coke sulfur-containing smoke gas is handled using pyrite-based sulphuric acid plant
Device, including sequentially connected batcher, roasting system, residual neat recovering system, dust pelletizing system, acid elution tower 1, drying tower 2, system
Sulfuric acid apparatus 3, transmission device 4, batcher include petroleum coke batcher 11 and troilite batcher 21, and roasting system includes oil
Burnt calcining furnace 12 and pyrite furnace 22, residual neat recovering system include the first heat recovery boiler 13 and the second waste heat recovery pot
Stove 23, dust pelletizing system include cyclone dust collectors 5 and electric precipitator 6, and cyclone dust collectors 5 are located at 6 front end of electric precipitator.At first time
It receives and is provided with the first wind turbine 14 and the first valve 15 between boiler 13 and dust pelletizing system；In the second recycling boiler 23 and dust pelletizing system
Between be provided with the second wind turbine 24 and the second valve 25.
Petroleum coke batcher 11, petroleum coke calciners 12, the first heat recovery boiler 13, the first wind turbine 14 and the first valve
Door 15 is sequentially connected, troilite batcher 21, pyrite furnace 22 and the second heat recovery boiler 23, the second wind turbine 24 and the
Two valves 25 are sequentially connected, and the first valve 15 converges to dust pelletizing system with the second valve 25 and connects.Petroleum coke batcher 11 with
Transmission device 4 is both provided between petroleum coke calciners 12 and between troilite batcher 21 and pyrite furnace 22.
Petroleum coke calciners 12 are can-type calcine furnace, and pyrite furnace 22 is fluidizing reactor.In drying tower 2 and system
It is provided with air supplement wind turbine 7 between sulfuric acid apparatus 3, is sulfur dioxide flue gas supplement fresh air.
Heat exchanger 8 is provided between drying tower 2 and double-absorption device 3, sulfur dioxide flue gas passes through wet cleaning system
It is cooled to 40~50 DEG C after system, Sulphur Dioxide is sulfur trioxide catalyst light-off temperature at 380~420 DEG C, therefore through acid
The flue gas that scrubbing tower 1 and drying tower 2 come out need to improve temperature to 380~420 DEG C through heat exchanger 8.
Sulphuric acid device 3 is double-absorption device, and double-absorption device includes converter, the first absorption tower and the second absorption
Tower.On the first absorption tower, top-down diluted acid and sulfur dioxide flue gas from below to up meet inside absorption tower, due to two
Sulfur oxide is soluble easily in water, is highly soluble in unsaturated diluted acid and forms concentrated acid, absorption rate of sulfur dioxide is more than 98% in the process, carries
Absorption tower is discharged by the pipeline of absorb the bottom of the tower in acid solution after dense.
The flue gas absorbed continues at 410~435 DEG C by SO2It is converted to SO3, through second absorption tower, continue to absorb SO3,
Finished product sulfuric acid is obtained, flow velocity of the sulfur trioxide flue gas in absorption tower is 1.2~1.5m/s.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of method handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant, which is characterized in that including following
Step：
(1) raw petroleum coke is calcined to obtain ripe petroleum coke and high temperature sulfur dioxide flue gas, pyrite burning is obtained into thick iron oxide
With high temperature sulfur dioxide flue gas；
(2) two-way high temperature sulfur dioxide flue gas respectively enters heat recovery boiler and carries out cooling acquisition low-pressure steam；
(3) after merging the two-way sulfur dioxide flue gas after cooling chalk dust removing is removed into dust pelletizing system；
(4) sulfur dioxide flue gas after chalk dust removing will be gone to be sent into after acid elution tower washs into drying tower drying；
(5) double-absorption technique finished product sulfuric acid will be used after the sulfur dioxide flue gas supplement fresh air after drying；
(6) tail gas generated after double-absorption technique is sent into tail gas absorber, is vented after Alkali absorption.
2. the method according to claim 1 for handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant, special
Sign is：In step (1), sulfur content is 1~15% in raw petroleum coke, and calcination temperature is at 1100~1400 DEG C；Sulphur in troilite
Content is 10~40%, and calcination temperature is at 1100~1300 DEG C.
3. the method according to claim 1 for handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant, special
Sign is：In step (2), sulfur dioxide flue gas is cooled to 120~180 DEG C.
4. a kind of device handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant, it is characterised in that：Including successively
The batcher of connection, roasting system, residual neat recovering system, dust pelletizing system, acid elution tower, drying tower and Sulphuric acid device are described
Batcher includes petroleum coke batcher and troilite batcher, and the roasting system includes petroleum coke calciners and pyrite burning
Stove, residual neat recovering system include the first heat recovery boiler and the second heat recovery boiler, the petroleum coke batcher, petroleum coke
Calcining furnace and the first heat recovery boiler are sequentially connected, the troilite batcher, pyrite furnace and the second waste heat recovery
Boiler is sequentially connected, and first heat recovery boiler and the second heat recovery boiler are connect with dust pelletizing system.
5. the device according to claim 4 for handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant, special
Sign is：The petroleum coke calciners are can-type calcine furnace, and the pyrite furnace is fluidizing reactor.
6. the device according to claim 4 for handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant, special
Sign is：The dust pelletizing system includes cyclone dust collectors and electric precipitator.
7. the device according to claim 5 for handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant, special
Sign is：The first wind turbine and the first valve are provided between the can-type calcine furnace and dust pelletizing system；In the fluidized bed roasting
The second wind turbine and the second valve are provided between stove and dust pelletizing system.
8. the method and dress according to claim 4 for handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant
It sets, it is characterised in that：Air supplement wind turbine is provided between the drying tower and Sulphuric acid device.
9. the method and dress according to claim 4 for handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant
It sets, it is characterised in that：The Sulphuric acid device is double-absorption device, and double-absorption device includes converter, the first absorption tower
And second absorption tower.
10. the method and dress according to claim 9 for handling calcining petroleum coke sulfur-containing smoke gas using pyrite-based sulphuric acid plant
It sets, it is characterised in that：It is provided with heat exchanger between the drying tower and double-absorption device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810311598.4A CN108298507B (en) | 2018-04-09 | 2018-04-09 | Method and device for treating sulfur-containing flue gas generated by calcining petroleum coke by using pyrite acid making device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810311598.4A CN108298507B (en) | 2018-04-09 | 2018-04-09 | Method and device for treating sulfur-containing flue gas generated by calcining petroleum coke by using pyrite acid making device |
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| CN108298507A true CN108298507A (en) | 2018-07-20 |
| CN108298507B CN108298507B (en) | 2023-05-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108927118A (en) * | 2018-08-03 | 2018-12-04 | 中碳能源(山东)有限公司 | A kind of calcining petroleum coke waste-gas adsorbant and its preparation method and application |
| CN109879255A (en) * | 2019-04-27 | 2019-06-14 | 招远市招金金合科技有限公司 | A system and method for producing refined sulfuric acid by a pyrite acid-making system |
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| EP2561921A1 (en) * | 2011-08-23 | 2013-02-27 | Haldor Topsøe A/S | Process for removal of NOx and SO2 in flue gas boilers |
| CN204111322U (en) * | 2014-09-10 | 2015-01-21 | 沈阳铝镁设计研究院有限公司 | Low temperature calcination petroleum coke can-type stove |
| CN104291276A (en) * | 2014-09-19 | 2015-01-21 | 中山市鸿程科研技术服务有限公司 | A kind of sulfuric acid production process |
| CN106987707A (en) * | 2017-03-30 | 2017-07-28 | 浙江华友钴业股份有限公司 | A kind of high-sulfur cobalt copper mine and troilite combination treatment method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2561921A1 (en) * | 2011-08-23 | 2013-02-27 | Haldor Topsøe A/S | Process for removal of NOx and SO2 in flue gas boilers |
| CN204111322U (en) * | 2014-09-10 | 2015-01-21 | 沈阳铝镁设计研究院有限公司 | Low temperature calcination petroleum coke can-type stove |
| CN104291276A (en) * | 2014-09-19 | 2015-01-21 | 中山市鸿程科研技术服务有限公司 | A kind of sulfuric acid production process |
| CN106987707A (en) * | 2017-03-30 | 2017-07-28 | 浙江华友钴业股份有限公司 | A kind of high-sulfur cobalt copper mine and troilite combination treatment method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108927118A (en) * | 2018-08-03 | 2018-12-04 | 中碳能源(山东)有限公司 | A kind of calcining petroleum coke waste-gas adsorbant and its preparation method and application |
| CN108927118B (en) * | 2018-08-03 | 2021-04-13 | 中碳能源(山东)有限公司 | Petroleum coke calcination waste gas adsorbent and preparation method and application thereof |
| CN109879255A (en) * | 2019-04-27 | 2019-06-14 | 招远市招金金合科技有限公司 | A system and method for producing refined sulfuric acid by a pyrite acid-making system |
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| CN108298507B (en) | 2023-05-16 |
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