CN208345757U - A kind of device using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas - Google Patents
A kind of device using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas Download PDFInfo
- Publication number
- CN208345757U CN208345757U CN201820495500.0U CN201820495500U CN208345757U CN 208345757 U CN208345757 U CN 208345757U CN 201820495500 U CN201820495500 U CN 201820495500U CN 208345757 U CN208345757 U CN 208345757U
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- CN
- China
- Prior art keywords
- petroleum coke
- pyrite
- sulphuric acid
- sulfur
- containing smoke
- Prior art date
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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
Abstract
The utility model discloses a kind of device using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas, including sequentially connected batcher, roasting system, residual neat recovering system, dust pelletizing system, acid elution tower, drying tower and Sulphuric acid device.The utility model 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 atmosphere, not only realize the recycling of exhaust gas, and it is environmentally friendly, it kills two birds with one stone.
Description
Technical field
The utility model belongs to aluminum electrolysis technology field, and in particular to a kind of to handle petroleum coke using pyrite-based sulphuric acid plant
Calcine the device of sulfur-containing smoke gas.
Background technique
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, the tail gas for causing calcining petroleum coke to generate is 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.
Utility model content
Purpose of utility model: in view of the deficienciess of the prior art, utilizing sulphur the purpose of the utility model is to provide a kind of
The device of iron ore sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas.
Technical solution: in order to realize that above-mentioned purpose of utility model, the technical solution adopted in the utility model are as follows:
Petroleum coke sulfur-containing smoke gas and the flue gas combined Sulphuric acid of troilite recycle sulfur dioxide flue gas using heat recovery boiler
In heat by-product low-pressure steam, enter the absorb the bottom of the tower of Sulphuric acid device after dedusting is dry, absorbing liquid is from absorbing tower top
Portion sprays into, and is countercurrently reacted, and the absorbing liquid for reacting completion is discharged from absorb the bottom of the tower pipeline；Filter and purify obtain it is pure
The concentrated sulfuric acid.The utility model discloses a kind of device for implementing the above method.It is real by the use of the utility model method and device
Show the utilization that calcining petroleum coke flue gas cooperates with relieving haperacidity with troilite flue gas, obtains the production such as low-pressure steam and commerical grade sulfuric acid
Product, specific:
The utility model discloses a kind of device using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas, including
Sequentially connected batcher, roasting system, residual neat recovering system, dust pelletizing system, acid elution tower, drying tower and Sulphuric acid device,
The batcher includes petroleum coke batcher and troilite batcher, and the roasting system includes petroleum coke calciners and troilite
Roaster, residual neat recovering system include the first heat recovery boiler and the second heat recovery boiler, the petroleum coke batcher, stone
Oil coke calcining furnace and the first heat recovery boiler are sequentially connected, the troilite batcher, pyrite furnace and the second waste heat
Recycling boiler is sequentially connected, and 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 blower and the first valve between the can-type calcine furnace and dust pelletizing system；Institute
It states and is provided with the second blower and the second valve between fluidizing reactor and dust pelletizing system.
Preferably, being provided with air supplement blower 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.
The utility model has the advantages that compared with prior art, the utility model has the advantage that
The device using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas of the utility model, petroleum coke is forged
The sulfur-containing smoke gas generated after burning is recycled, and realizes calcining petroleum coke flue gas and sulphur iron using production of sulfur from pyrite acid device
Mine flue gas cooperates with the utilization of relieving haperacidity, has obtained the products such as low-pressure steam and commerical grade sulfuric acid, and it is extremely a small amount of only to generate machine
Solid waste, flue gas after absorption is up to standard to be discharged into atmosphere, not only realizes the recycling of exhaust gas, and environmentally friendly, at one stroke
Two.
Detailed description of the invention
Fig. 1 is the device flow chart using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas.
Specific embodiment
The utility model is furtherd elucidate with reference to the accompanying drawing.
As shown in Figure 1, the device using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas of the application, including
Sequentially connected batcher, roasting system, residual neat recovering system, dust pelletizing system, acid elution tower 1, drying tower 2, Sulphuric acid device
3, transmission device 4, batcher include petroleum coke batcher 11 and troilite batcher 21, and roasting system includes petroleum coke calciners
12 and pyrite furnace 22, residual neat recovering system includes the first heat recovery boiler 13 and the second heat recovery boiler 23, is removed
Dirt system includes cyclone dust collectors 5 and electric precipitator 6, and cyclone dust collectors 5 are located at 6 front end of electric precipitator.Boiler is recycled first
The first blower 14 and the first valve 15 are provided between 13 and dust pelletizing system；It is set between the second recycling boiler 23 and dust pelletizing system
It is equipped with the second blower 24 and the second valve 25.
Petroleum coke batcher 11, petroleum coke calciners 12, the first heat recovery boiler 13, the first blower 14 and the first valve
15 are sequentially connected, troilite batcher 21, pyrite furnace 22 and the second heat recovery boiler 23, the second blower 24 and second
Valve 25 is sequentially connected, and the first valve 15 converges to dust pelletizing system with the second valve 25 and connects.In petroleum coke batcher 11 and stone
Transmission device 4 is provided between oil coke calcining furnace 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 sulphur processed
It is provided with air supplement blower 7 between sour device 3, uses fresh air for sulfur dioxide flue gas supplement.
Heat exchanger 8 is provided between drying tower 2 and double-absorption device 3, sulfur dioxide flue gas passes through wet cleaning system
40~50 DEG C are cooled to 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, and absorption rate of sulfur dioxide is greater than 98% in the process, mentions
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 method for carrying out petroleum coke sulfur-containing smoke gas and the flue gas combined Sulphuric acid of troilite using above-mentioned apparatus, including following step
It is rapid:
(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) enter dust pelletizing system after merging the two-way sulfur dioxide flue gas after cooling and remove chalk dust removing；
(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 is used after the sulfur dioxide flue gas after drying being supplemented fresh air；
(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
Furnace 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 maturing temperature is at 1100~1300 DEG C.
In step (2), sulfur dioxide flue gas is cold but to remove chalk dust removing to entering dust pelletizing system after 120~180 DEG C.
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
It is dry to enter drying tower, 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.Sulfur dioxide flue gas after supplementing fresh air uses two
Turn two to inhale technique for Sulphur Dioxide to be sulfur trioxide, the gas after conversion enters absorption tower finished product grade sulfuric acid.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (7)
1. a kind of device using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas, 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
Furnace, 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 recycling of the second waste heat
Boiler is sequentially connected, and first heat recovery boiler and the second heat recovery boiler are connect with dust pelletizing system.
2. the device according to claim 1 using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas, special
Sign is: the petroleum coke calciners are can-type calcine furnace, and the pyrite furnace is fluidizing reactor.
3. the device according to claim 1 using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas, special
Sign is: the dust pelletizing system includes cyclone dust collectors and electric precipitator.
4. the device according to claim 2 using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas, special
Sign is: the first blower and the first valve are provided between the can-type calcine furnace and dust pelletizing system；In the fluidized bed roasting
The second blower and the second valve are provided between furnace and dust pelletizing system.
5. the device according to claim 1 using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas, special
Sign is: air supplement blower is provided between the drying tower and Sulphuric acid device.
6. the device according to claim 1 using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas, special
Sign is: the Sulphuric acid device is double-absorption device, and double-absorption device includes converter, the first absorption tower and the second suction
Receive tower.
7. the device according to claim 6 using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas, special
Sign is: being provided with heat exchanger between the drying tower and double-absorption device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820495500.0U CN208345757U (en) | 2018-04-09 | 2018-04-09 | A kind of device using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820495500.0U CN208345757U (en) | 2018-04-09 | 2018-04-09 | A kind of device using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas |
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| Publication Number | Publication Date |
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| CN208345757U true CN208345757U (en) | 2019-01-08 |
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| CN201820495500.0U Expired - Fee Related CN208345757U (en) | 2018-04-09 | 2018-04-09 | A kind of device using pyrite-based sulphuric acid plant processing calcining petroleum coke sulfur-containing smoke gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109879255A (en) * | 2019-04-27 | 2019-06-14 | 招远市招金金合科技有限公司 | A kind of system and method for pyrite-based sulfuric acid production system production refined sulfuric acid |
-
2018
- 2018-04-09 CN CN201820495500.0U patent/CN208345757U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109879255A (en) * | 2019-04-27 | 2019-06-14 | 招远市招金金合科技有限公司 | A kind of system and method for pyrite-based sulfuric acid production system production refined sulfuric acid |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190108 |