CN109589737A - A kind of cracking gas purification system and method - Google Patents
A kind of cracking gas purification system and method Download PDFInfo
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- CN109589737A CN109589737A CN201910070422.9A CN201910070422A CN109589737A CN 109589737 A CN109589737 A CN 109589737A CN 201910070422 A CN201910070422 A CN 201910070422A CN 109589737 A CN109589737 A CN 109589737A
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- cracking gas
- oil
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- purification system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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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
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum 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
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a kind of cracking gas purification system, including cyclone separator, filter, oil wash tower and water wash column, the cyclone separator is equipped with cracking gas air inlet, and the cyclone separator bottom is equipped with waste residue collection device；The gas outlet of the cyclone separator is connected with the air inlet of the filter, and the gas outlet of the filter is connected with the air inlet of the oil wash tower, and the gas outlet of the oil wash tower is connected with the air inlet of the water wash column.In cracking gas purification system of the present invention, the cracking gas removes bulky grain solid by cyclone separator, then solid small particles are removed by filter, removes organic impurities and Inorganic water-soluble impurity using oil wash and washing, and there can be good classification to it while removing impurity.This system is suitable for the pyrolysis product based on on-condensible gas, or the cracking gas obtained after tentatively condensation processing.With advantages such as process continuous controllable, good purification, automatization level height.
Description
Technical field
The present invention relates to a kind of method for gas purification, and in particular to a kind of cracking gas purification system and method.
Background technique
Since the eighties in last century, in-depth study and extensive practice have been carried out to cracking technique both at home and abroad.Crack skill
It is the stabilisation of solid waste (such as sludge, municipal solid waste) of the art for biomass and containing organic matter, minimizing, harmless
Change and recycling treatment has good application.Currently, being directed to different raw materials, the country has developed the cracking skill of a variety of maturations
Art, and develop corresponding equipment.
Cracking technique is based on organic matter pyrolytic mechanism, using high temperature or anoxybiotic environment by organic in solid
The long-chain of object is broken, and forms solid carbon slag, biodiesel and CH4Etc. small molecules on-condensible gas.By cracking, in solid
Calorific value focuses in biodiesel and on-condensible gas, convenient for the transport and use of energy, moreover, the ratio of pyrolysis product can be with
It is adjusted by adjusting cracking parameter.Therefore, separation, purification system are the key that pyrolysis product applications.
Summary of the invention
There is provided it is an object of the invention to overcome in place of the shortcomings of the prior art a kind of cracking gas purification system and
Method.
To achieve the above object, the technical scheme adopted by the invention is as follows: a kind of cracking gas purification system, including cyclonic separation
Device, filter, oil wash tower and water wash column, the cyclone separator are equipped with cracking gas air inlet, the cyclone separator
Bottom is equipped with waste residue collection device；The gas outlet of the cyclone separator is connected with the air inlet of the filter, the filtering
The gas outlet of device is connected with the air inlet of the oil wash tower, the gas outlet of the oil wash tower and the air inlet of the water wash column
Mouth is connected.
The cracking gas that cracking generates contains Multiple components, in order to preferably utilize cracking gas, devises one to this present invention
Cover cracking gas purification system.In the purification system, the cracking gas removes bulky grain solid by cyclone separator, then passes through
Filter removes solid small particles, removes organic impurities and Inorganic water-soluble impurity using oil wash and washing, and can remove
There is good classification while decontamination to it.Plant oil wash is used in oil wash tower, can effectively be absorbed micro- in cracking gas
The organic matters such as benzene, the tar of amount, and water scrubber can effectively absorb SO2、H2S、NH3Deng the inorganic gas with peculiar smell.This system
Suitable for the pyrolysis product based on on-condensible gas, or the cracking gas obtained after tentatively condensation processing.Connect with process
The advantages such as continuous controllable, good purification, automatization level height.
As the preferred embodiment of cracking gas purification system of the present invention, the lower section of the oil wash tower is equipped with washing oil
The top of outlet, the oil wash tower is equipped with washing oil entrance；The air inlet of the oil wash tower is set to the lower part of oil wash tower, institute
The gas outlet for stating oil wash tower is set to the top of oil wash tower；Outside the oil wash tower, the washing oil outlet is washed with described
By pipeline connection, the pipeline is equipped with for waste oil to be pumped to the washing oil entrance by washing oil outlet for oil-in
Oil circulating pump.
As the preferred embodiment of cracking gas purification system of the present invention, the lower section of the water wash column goes out equipped with water
Mouthful, the top of the water wash column is equipped with water inlet；The air inlet of the water wash column is set to the lower part of water wash column, the water
The gas outlet of scrubbing tower is set to the top of water wash column；Outside the water wash column, the water out and the water inlet are logical
Pipeline connection is crossed, the pipeline is equipped with the water-circulating pump for waste water to be pumped to the water inlet.
Heat exchange dress is equipped with as the preferred embodiment of cracking gas purification system of the present invention, in the oil wash tower
It sets.Cracking gas due to entering purification system also maintains higher temperature, for this purpose, the fuel tank in oil wash tower is equipped with water-cooled jacket
And cooling cycle, it can cool down to cracking gas.
It further include cooling driers as the preferred embodiment of cracking gas purification system of the present invention, the water wash column
Gas outlet be connected with the gas access of cooling driers.The cooling driers are for drying cracking gas, to clean, splitting of drying
It vents one's spleen.
As the preferred embodiment of cracking gas purification system of the present invention, further includes main cracking gas holding vessel and auxiliary split
It vents one's spleen holding vessel, the gas outlet of the cooling driers is connected with main cracking gas holding vessel and auxiliary cracking gas holding vessel respectively；Master is split
Holding vessel of venting one's spleen is connected with subscribers' line, and auxiliary cracking gas holding vessel is connected by pipeline with filter.
Cracking gas in main cracking gas holding vessel makes for supplying user, auxiliary cracking gas holding vessel for the self-cleaning of filter
With rinsing gas source as filter core using cracking gas, avoid additional corrosion of the mixed impurity to filter core.
It further include filter self-cleaning system as the preferred embodiment of cracking gas purification system of the present invention, it is described
Self-cleaning system are as follows: be respectively equipped with first pressure gauge and second pressure gauge on the air inlet and air outlet pipeline of the filter；Institute
It states and is equipped with the differential pressure pickup between first pressure gauge and second pressure gauge；Between the auxiliary cracking gas holding vessel and filter
It is connected by pipeline, the pipeline is equipped with valve；The differential pressure sensor is electrical connected with valve, when the pressure difference incudes
Device senses that pressure difference is less than setting value, and the first valve of control is opened.
When filter pressure drop reaches limits value, automated system control valve is opened, clean in auxiliary cracking gas holding vessel
Cracked gas back flush filter core realizes self-cleaning function, substantially increases the service life of filter core.
As the preferred embodiment of cracking gas purification system of the present invention, the filter and waste residue collection device phase
Connection.After rinsing to filter core, the dust in filter core can enter waste residue collection device by gravitational settling.
As the preferred embodiment of cracking gas purification system of the present invention, the cooling driers and main cracking gas holding vessel
Between pipeline be equipped with booster fan, the cooling driers and pipeline between auxiliary cracking gas holding vessel are equipped with pressurization wind
Machine.
As the preferred embodiment of cracking gas purification system of the present invention, ceramic element is equipped in the filter.
The ceramic element is fiber strengthened ceramic element, has good structural strength and filtering feature.
The present invention also provides a kind of cracking gas purifying method, the cracking gas purifying method will be the following steps are included: will split
Solids in venting one's spleen is separated off, then in turn through oil wash, washing and drying to get purified cracking gas.
As the preferred embodiment of cracking gas purifying method of the present invention, the solids in cracking gas is separated
The method of removing are as follows: bulky grain solid is first removed using cyclone separator, then removes solid small particles by filter；It is described
Filter carries out automatically cleaning using following methods: being backwashed using purified cracking gas, makes solid small particles from filter
It detaches.
The beneficial effects of the present invention are: the present invention provides a kind of cracking gas purification system and methods.It is of the present invention
In cracking gas purification system, the cracking gas removes bulky grain solid by cyclone separator, then removes by filter small
Granular solids remove organic impurities and Inorganic water-soluble impurity using oil wash and washing, and can be while removing impurity
There is good classification to it.This system is suitable for the pyrolysis product based on on-condensible gas, or after tentatively condensation processing
Obtained cracking gas.With advantages such as process continuous controllable, good purification, automatization level height.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of purification system of the present invention；
Wherein, 1, cyclone separator；2, waste residue collection device；3, first pressure gauge；4, filter；5, second pressure gauge；
6, oil wash tower；7, oil circulating pump；8, water wash column；9, water-circulating pump；10, cooling driers；11, the first valve；12, the first pressurization
Blower；13, main cracking gas holding vessel；14, the second valve；15, third valve；16, the second booster fan；17, auxiliary cracking gas storage
Deposit tank；18, the 4th valve.
Specific embodiment
To better illustrate the object, technical solutions and advantages of the present invention, below in conjunction with specific embodiment to the present invention
It is described further.
Embodiment
A kind of embodiment of cracking gas purification system of the present invention, the structure of cracking gas purification system described in the present embodiment
Schematic diagram is as shown in Figure 1, the cracking gas purification system includes cyclone separator 1, filter 4, oil wash tower 5, water wash column
8, cooling driers 10, main cracking gas holding vessel 13 and auxiliary cracking gas holding vessel 17, the cyclone separator 1 are equipped with cracking gas air inlet
Mouthful, 1 bottom of cyclone separator is equipped with waste residue collection device 2；The gas outlet of the cyclone separator 1 and the filter 4
Air inlet be connected, the gas outlet of the filter 4 is connected with the air inlet of the oil wash tower 6, the oil wash tower 6 out
Port is connected with the air inlet of the water wash column 8；The gas access phase of the gas outlet of the water wash column 8 and cooling driers 10
Even；
The lower section of the oil wash tower 6 is exported equipped with washing oil, and the top of the oil wash tower 6 is equipped with washing oil entrance；It is described
The air inlet of oil wash tower 6 is set to the lower part of oil wash tower 6, and the gas outlet of the oil wash tower 6 is set to the upper of oil wash tower 6
Portion；Outside the oil wash tower 6, with the washing oil entrance by pipeline connection, the pipeline is equipped with for the washing oil outlet
For waste oil to be pumped to the oil circulating pump 7 of the washing oil entrance by washing oil outlet；It is equipped with and is used in the oil wash tower
The heat-exchanger rig (not shown) of cracking gas cooling.
The lower section of the water wash column 8 is equipped with water out, and the top of the water wash column 8 is equipped with water inlet；The washing
The air inlet for washing tower 8 is set to the lower part of water wash column, and the gas outlet of the water wash column 8 is set to the top of water wash column 8；Institute
It states outside water wash column 8, by pipeline connection, the pipeline is equipped with for taking out waste water for the water out and the water inlet
It is drawn to the water-circulating pump 9 of the water inlet.
The gas outlet of the cooling driers 10 passes sequentially through the first valve 11, the first booster fan 12 and main cracking gas holding vessel
13 are connected, and the gas outlet of the air-cooler 10 passes sequentially through third valve 15, the second booster fan 16 and the storage of auxiliary cracking gas
Tank 17 is connected；Main cracking gas holding vessel 13 is connected by the second valve 14 with subscribers' line.
The cracking gas purification system further includes self-cleaning system, and the self-cleaning system includes first pressure gauge 3 and the second pressure
Power table 5, first pressure gauge 3 and second pressure gauge 5 are respectively arranged on the air inlet and air outlet pipeline of the filter 4；It is described
The differential pressure pickup (not shown) is equipped between first pressure gauge 3 and second pressure gauge 5；Auxiliary cracking gas holding vessel 17 is logical
Pipeline is crossed to be connected by the 4th valve 18 with filter 4；The differential pressure sensor is electrical connected with the 4th valve 18, when described
Differential pressure sensor senses that pressure difference is less than setting value, and the 4th valve 18 of control is opened；The filter 4 and waste residue collection device 2
It is connected.
Described in the present embodiment when the work of cracking purification system, cracking gas to be clean enters the cracking purification system, first
Cyclone separator 1 is first passed through, most solids are separated in waste residue collection device 2, then, cracking gas passes through filter 4
Dust is further removed, organic impurities and further cooling is removed by oil wash tower 6, removes inorganic water by water wash column 8
Solubility impurity obtains the room temperature cracking gas of dry cleansing after cooling driers 10, wherein most of cleaning cracking gas passes through the
One valve 11, booster fan 12, main cracking gas holding vessel 13 and the second valve 14 supply user, and few part cleaning cracking gas is logical
It crosses third valve 15 and booster fan 16 enters in auxiliary cracking gas holding vessel 17, form high-pressure air source.
Filter 4 is the array of ceramic element composition, is made of fiber strengthened ceramic element, cracking gas passes through filter
The pressure that 4 front and backs are lost is monitored by two pressure gauges (first pressure gauge 3 and second pressure gauge 5).When pressure drop reaches limit value, open
The 4th valve 18 is opened, filter core is backwashed, the dust in filter core can enter waste residue collection device 2 by gravitational settling, real
The self-cleaning function of existing filter.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than protects to the present invention
The limitation of range is protected, although the invention is described in detail with reference to the preferred embodiments, those skilled in the art should
Understand, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the essence of technical solution of the present invention
And range.
Claims (10)
1. a kind of cracking gas purification system, which is characterized in that including cyclone separator, filter, oil wash tower and water wash column,
The cyclone separator is equipped with cracking gas air inlet, and the cyclone separator bottom is equipped with waste residue collection device；The whirlwind
The gas outlet of separator is connected with the air inlet of the filter, the air inlet of the gas outlet of the filter and the oil wash tower
Mouth is connected, and the gas outlet of the oil wash tower is connected with the air inlet of the water wash column.
2. cracking gas purification system as described in claim 1, which is characterized in that the lower section of the oil wash tower goes out equipped with washing oil
Mouthful, the top of the oil wash tower is equipped with washing oil entrance；The air inlet of the oil wash tower is set to the lower part of oil wash tower, described
The gas outlet of oil wash tower is set to the top of oil wash tower；Outside the oil wash tower, the washing oil outlet and the washing oil
For entrance by pipeline connection, the pipeline is equipped with the oil for waste oil to be pumped to the washing oil entrance by washing oil outlet
Circulating pump.
3. cracking gas purification system as described in claim 1, which is characterized in that the lower section of the water wash column is equipped with water out,
The top of the water wash column is equipped with water inlet；The air inlet of the water wash column is set to the lower part of water wash column, the washing
The gas outlet for washing tower is set to the top of water wash column；Outside the water wash column, the water out passes through with the water inlet
Pipeline connection, the pipeline are equipped with the water-circulating pump for waste water to be pumped to the water inlet.
4. cracking gas purification system as described in claim 1, which is characterized in that further include cooling driers, the water wash column goes out
Port is connected with the gas access of cooling driers.
5. cracking gas purification system as claimed in claim 4, which is characterized in that further include main cracking gas holding vessel and auxiliary cracking gas
Holding vessel, the gas outlet of the cooling driers are connected with main cracking gas holding vessel and auxiliary cracking gas holding vessel respectively；Main cracking gas
Holding vessel is connected with subscribers' line, and auxiliary cracking gas holding vessel is connected by pipeline with filter.
6. cracking gas purification system as claimed in claim 5, which is characterized in that it further include filter self-cleaning system, it is described self-cleaning
System includes first pressure gauge and second pressure gauge, and the first pressure gauge and second pressure gauge are respectively arranged on the filter
On air inlet and air outlet pipeline；The differential pressure pickup is equipped between the first pressure gauge and second pressure gauge；It is described auxiliary
It is connected between cracking gas holding vessel and filter by pipeline, the pipeline is equipped with valve；The differential pressure sensor and valve
Door is electrical connected, and when the differential pressure sensor senses that pressure difference is less than setting value, control valve is opened.
7. cracking gas purification system as claimed in claim 6, which is characterized in that the filter is connected with waste residue collection device
It is logical.
8. cracking gas purification system as claimed in claim 6, which is characterized in that between the cooling driers and main cracking gas holding vessel
Pipeline be equipped with booster fan, the cooling driers and pipeline between auxiliary cracking gas holding vessel are equipped with booster fan.
9. a kind of cracking gas purifying method, which comprises the following steps: the solids in cracking gas is carried out separation and is removed
It goes, then in turn through oil wash, washing and drying to get purified cracking gas.
10. cracking gas purifying method as claimed in claim 9, which is characterized in that the solids in cracking gas is carried out separation and is removed
The method gone are as follows: bulky grain solid is first removed using cyclone separator, then removes solid small particles by filter；The mistake
Filter carries out automatically cleaning using following methods: being backwashed using purified cracking gas, takes off solid small particles from filter
It separates out and.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910070422.9A CN109589737A (en) | 2019-01-23 | 2019-01-23 | A kind of cracking gas purification system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910070422.9A CN109589737A (en) | 2019-01-23 | 2019-01-23 | A kind of cracking gas purification system and method |
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| CN201910070422.9A Pending CN109589737A (en) | 2019-01-23 | 2019-01-23 | A kind of cracking gas purification system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110776963A (en) * | 2019-11-07 | 2020-02-11 | 同济大学 | Waste pyrolysis gas purification device and method |
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| US20180273864A1 (en) * | 2015-09-25 | 2018-09-27 | Shell Oil Company | Conversion of biomass into methane |
| CN208244357U (en) * | 2017-11-03 | 2018-12-18 | 天津市三木森电炉股份有限公司 | A kind of flue gas cleaning system |
| CN209630880U (en) * | 2019-01-23 | 2019-11-15 | 广州研华环境科技有限公司 | A kind of cracking gas purification system |
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2019
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| JPS5738923A (en) * | 1980-08-21 | 1982-03-03 | Agency Of Ind Science & Technol | Method and device for purifying thermally cracked gas |
| CN104449880A (en) * | 2014-12-16 | 2015-03-25 | 新奥科技发展有限公司 | Crude coal gas purifying method and crude coal gas purifying device |
| CN204981786U (en) * | 2015-09-24 | 2016-01-20 | 新奥科技发展有限公司 | Coal gas dust removal cooling system and coal gasification system |
| US20180273864A1 (en) * | 2015-09-25 | 2018-09-27 | Shell Oil Company | Conversion of biomass into methane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110776963A (en) * | 2019-11-07 | 2020-02-11 | 同济大学 | Waste pyrolysis gas purification device and method |
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