CN108310916A - The processing equipment and method of the VOC of biodiesel enterprise discharge - Google Patents
The processing equipment and method of the VOC of biodiesel enterprise discharge Download PDFInfo
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- CN108310916A CN108310916A CN201810153217.4A CN201810153217A CN108310916A CN 108310916 A CN108310916 A CN 108310916A CN 201810153217 A CN201810153217 A CN 201810153217A CN 108310916 A CN108310916 A CN 108310916A
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- Prior art keywords
- voc
- gas
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- absorption
- ozone
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- 239000003225 biodiesel Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 26
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000010521 absorption reaction Methods 0.000 claims abstract description 71
- 241000748457 Melampodium Species 0.000 claims abstract description 39
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 36
- 150000004702 methyl esters Chemical class 0.000 claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 230000004087 circulation Effects 0.000 claims abstract description 25
- 239000002699 waste material Substances 0.000 claims abstract description 18
- 239000002351 wastewater Substances 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims description 159
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 71
- 235000011187 glycerol Nutrition 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 241000628997 Flos Species 0.000 claims description 6
- 150000003384 small molecules Chemical class 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000006555 catalytic reaction Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000002910 solid waste Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000011953 bioanalysis Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- -1 small molecule hydrocarbon Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1406—Multiple stage absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/20—Organic absorbents
- B01D2252/205—Other organic compounds not covered by B01D2252/00 - B01D2252/20494
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
A kind of processing equipment and method of the VOC of biodiesel enterprise discharge.VOC gas absorption tower includes the first absorption towers VOC and the 2nd absorption towers VOC；Gas collection pipeline includes methanol column VOC gas collecting pipe, methyl esters tower VOC gas collecting pipe；It is connected to the first absorption towers VOC lower part after two articles of VOC gas collecting pipe parallel connections；There are First Heat Exchanger and first circulation pump, reaction kettle waste collection pipe to be connected to the 2nd absorption towers VOC lower part on reaction kettle waste collection pipe；There are the second heat exchanger and second circulation pump, black foot collecting pipe to be connected to the first absorption towers VOC lower part on black foot collecting pipe；The gas discharge outlet on the first absorption towers VOC is connected to the gas access of the 2nd lower parts VOC；Gas discharge outlet at the top of 2nd absorption towers VOC is connected to ozone tower lower part；Ozone tower lower part is connected to ozone generator；The gas discharge outlet of ozone tower is connected to ozone breaker.The present invention is without security risk；No waste water and solid waste generate；It is diluted without big wind turbine；Low energy consumption for environment-protective process, reliable and stable；Invest it is small it is quick, realize it is unattended.
Description
Technical field
The present invention relates to VOC process fields, the VOC processing equipments of specifically a kind of production of biodiesel industry and make
The method for handling VOC with the equipment.
Background technology
In recent years, strict demand and supervision of the country to environmental protection, makes discharge unit and department have to invest various environmental protection
Facility is to reach the discharge standard of country.Wherein VOC is an important indicator of environmental protection.
Production of biodiesel industry has a large amount of VOC emission, needs all to collect up to standard handled.Biodiesel
The VOC main sources of factory are the light component and methyl esters rectifying vacuum system tail gas two parts of methanol fractionation system, mainly contain alcohol
Class, aldehydes, esters and small molecule hydrocarbon etc., currently, biodiesel factory for VOC processing method there are three types of：One, tail gas is delivered to
Boiler combustion；Two, by the series of processes such as washing, Strong oxdiative, high pressure plasma and ultraviolet light, activated carbon；Three, bioanalysis.
Three of the above method all Shortcomings, burning method security risk is very big, Frequent Accidents, and bioanalysis needs uninterrupted for a long time high
Grade nurse, and multi task process method generates a large amount of hc effluents and waste active carbon, and have high processing cost, biodiesel
Industry is low profit industry, so for biodiesel industry, there is an urgent need to a kind of inexpensive, high security VOC's
Processing method.
Invention content
The present invention in view of the deficiencies in the prior art, provides a kind of processing equipment of inexpensive, high security VOC
And method.The VOC handled by this method finally realizes qualified discharge, and organic matter can be applied in VOC.
The technical solution adopted in the present invention is：
A kind of processing equipment of the VOC of biodiesel enterprise discharge, including gas collection pipeline, waste collection pipeline, VOC gas
Absorption tower, ozone tower and ozone breaker,
The VOC gas absorption tower includes the first absorption towers VOC and the 2nd absorption towers VOC being set up in parallel；
The gas collection pipeline includes the methanol column VOC gas collecting pipe being connected to methanol rectifying tower floss hole and methyl esters essence
Evaporate the methyl esters tower VOC gas collecting pipe of tower floss hole connection；It is inhaled with the first VOC after two articles of VOC gas collecting pipe parallel connections
Receive the connection of tower lower part；
The waste collection pipeline includes the reaction kettle waste collection pipe being connect with the reaction end of reaction kettle and methyl esters rectifying column
React the black foot collecting pipe of end connection；First Heat Exchanger and first circulation are installed on the reaction kettle waste collection pipe
Pump, the reaction kettle waste collection pipe are connected to the 2nd absorption towers VOC lower part；The second heat exchange is installed on the black foot collecting pipe
Device and second circulation pump, the black foot collecting pipe are connected to the first absorption towers VOC lower part；
Gas discharge outlet at the top of first absorption towers VOC is connected to by pipeline with the gas access of the 2nd lower parts VOC；
Gas discharge outlet at the top of 2nd absorption towers VOC is connected to by pipeline with ozone tower lower part；The ozone tower
Lower part is connected to by pipeline with ozone generator；The gas discharge outlet of the ozone top of tower is connected by pipeline and ozone breaker
It is logical.
Preferably：Air-introduced machine is installed on the gas collection pipeline.
Preferably：The gas caching that the VOC gas absorption tower includes absorption tower tower body, is arranged inside tower body
Plate sets up liquid outlet and inlet in tower body upper and lower part separately；Further include the gas distributing disc being arranged in tower body bottom, the gas
Nozzle is evenly equipped on body distributing disc, gas distribution pan bottom is connected to by pipeline with the gas collection pipeline；The tower body top
Portion is provided with gas outlet；The inlet is arranged above the gas distributing disc.
Preferably：At least 3 layers of gas caching plate are from top to bottom set side by side in the tower body.
Preferably：The gas caching plate is circular orifice, is covered with through-hole, through-hole internal diameter 3-5mm on plate body.
Preferably：Through-hole on adjacent gas caching plate is staggered.
Preferably：It is to be welded and fixed between the excircle and tower body inner wall of the gas caching plate.
Preferably：It is movable connection structure between the gas caching plate and tower body inner wall.
Preferably：Both sides are provided at least two groups plate to vehicle in the tower body inner wall, and every group of plate includes two
A thin plate being set up in parallel, thin plate is horizontally disposed, and side is welded with tower body inner wall, and the other side is hanging；The gas caching plate
Periphery is inserted into plate.
Using the method for the VOC of equipment processing biodiesel enterprise discharge, the specific method is as follows：
A, methanol rectifying tower works under the conditions of micro-positive pressure, methanol column VOC gas is generated in production process, by methanol column VOC gas
Body collection conduit is sent out；
B, methyl esters rectifying column works under vacuum, and methyl esters tower VOC gas, and methyl esters tower VOC gas are generated in production process
Collection conduit is sent out；
C, it opens air-introduced machine and methanol column VOC gas and methyl esters tower VOC gas is led into downstream by closed gas collection pipeline
Processing section；
D, black foot of the methyl esters rectifying column after rectifying is in a liquid state at high operating temperatures, is exported by methyl esters rectifier bottoms through pipeline
Squeeze into storage tank, open the second heat exchanger, second circulation pump, black foot be rapidly cooled under the action of the second heat exchanger 50 DEG C-
Between 60 DEG C, black foot is in paste, is squeezed into the first absorption towers VOC through second circulation pump discharge collateral branch through overcooled black foot, the
One VOC absorb the bottom of the tower gas is uniformly distributed through air inlet and gas distributing disc as tiny bubble, and black foot fills with tower body simultaneously
It slowly flows up, while after black foot is sufficiently mixed absorption with VOC gas under the action of gas caches plate, through absorption tower upper end
It is exported to black foot export trade；
E, Glycerol Wastewater is isolated from bottom to be squeezed into storage tank by reactor bottom outlet through pipeline, open after the completion of reaction kettle reaction
First Heat Exchanger, first circulation pump are opened, Glycerol Wastewater is rapidly cooled under the action of First Heat Exchanger between 10 DEG C -20 DEG C,
It is squeezed into the 2nd absorption towers VOC through first circulation pump discharge collateral branch through overcooled Glycerol Wastewater, the 2nd VOC absorb the bottom of the tower gas
Body is uniformly distributed through air inlet and gas distributing disc as tiny bubble, and crude glycerine fills with tower body and slowly flows up, together
When after crude glycerine and VOC gas are sufficiently mixed absorption under the action of gas caches plate, through absorption tower upper end outlet to decontaminated water
Treating stations；
F, there are some micro small molecule VOC to carry out advanced treating through ozone tower in the gas by two-stage absorption, open smelly
Oxygen Generator and ozone breaker, small molecule VOC are quickly converted to inorganic matter and water under the catalysis of inner-tower filling material, then up to standard
Discharge.
Compared to existing biodiesel VOC processing methods, this method has the advantages that following have：1, without security risk；2, without useless
Water and solid waste generate；3, big wind turbine is not necessarily to dilute；4, low energy consumption, reliable and stable for this method environment-protective process；5, this investment is small takes effect
Soon, it realizes unattended.Description of the drawings
Fig. 1 is the process flow chart of the present invention.
Fig. 2 is VOC gas absorption tower structural schematic diagram in the present invention.
In figure：1 methanol column VOC gas collecting pipe；2 methanol rectifying towers；3 methyl esters tower VOC gas collecting pipes；4 methyl esters rectifying
Tower；5；Reaction kettle；6 Glycerol Wastewaters；7 First Heat Exchangers；8 first circulations pump；9 black feet；10 second heat exchangers；11 second circulations
Pump；12 air-introduced machines；13 the 2nd absorption towers VOC；14 the oneth absorption towers VOC；15 black foot export trades；16 Glycerol Wastewater delivery pipes；17 is smelly
Oxygen Generator；18 ozone towers；19 ozone breakers；20VOC gas qualified discharge pipes；21 air inlets；22 inlets；23 gases point
Cloth disk；24 gases cache plate；25 liquid outlets；26 gas outlets.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and examples.
The processing equipment of the VOC of this biodiesel enterprise discharge disclosed in this invention, including 1 methanol column VOC gas
Collecting pipe；2 methanol rectifying towers；3 methyl esters tower VOC gas collecting pipes；4 methyl esters rectifying columns；5；Reaction kettle；6 Glycerol Wastewaters；7 first
Heat exchanger；8 first circulations pump；9 black feet；10 second heat exchangers；11 second circulations pump；12 air-introduced machines；13 the 2nd absorption towers VOC；
14 the oneth absorption towers VOC；15 black foot export trades；16 Glycerol Wastewater delivery pipes；17 ozone generators；18 ozone towers；19 ozone layer destroyings
Device；20VOC gas qualified discharge pipes；21 air inlets；22 inlets；23 gas distributing discs；24 gases cache plate；25 liquid outlets；
26 gas outlets.VOC gas absorption tower therein includes the first absorption towers VOC and the 2nd absorption towers VOC being set up in parallel.The present invention
It mainly goes to adsorb a large amount of dissolubility VOC using the cold of material during production of biodiesel, achievees the effect that waste recycling.
Gas collection pipeline includes the methanol column VOC gas collecting pipe being connected to methanol rectifying tower floss hole and methyl esters essence
Evaporate the methyl esters tower VOC gas collecting pipe of tower floss hole connection.After two articles of VOC gas collecting pipe parallel connections under the first absorption towers VOC
Portion is connected to.Air-introduced machine is installed on gas collection pipeline.
Waste collection pipeline includes the reaction kettle waste being connect with the Glycerol Wastewater storage container of the reaction end of reaction kettle
Collecting pipe, that is, Glycerol Wastewater collecting pipe, the black foot collecting pipe being connect with the black foot storage container of methyl esters distillation column reactor end.Instead
It answers and First Heat Exchanger and first circulation pump is installed on kettle waste collection pipe, the reaction kettle waste collection pipe and the 2nd VOC absorb
Tower lower part is connected to；Second heat exchanger and second circulation pump are installed, the black foot collecting pipe and the first VOC absorb on black foot collecting pipe
Tower lower part is connected to.
Gas discharge outlet at the top of first absorption towers VOC is connected to by pipeline with the gas access of the 2nd lower parts VOC.
Gas discharge outlet at the top of 2nd absorption towers VOC is connected to by pipeline with ozone tower lower part.Ozone tower lower part
It is connected to ozone generator by pipeline.The gas discharge outlet of ozone top of tower is connected to by pipeline with ozone breaker.
VOC gas absorption tower includes absorption tower tower body, is arranged inside tower body gas caching plate sets up separately on tower body top
With the liquid outlet and inlet of lower part；It further include the gas distributing disc being arranged in tower body bottom.It is evenly equipped on the gas distributing disc
Nozzle, gas distribution pan bottom are connected to by pipeline with the gas collection pipeline.It is provided with gas outlet at the top of tower body；It is described into
Liquid mouth is arranged above the gas distributing disc.
The inlet on the first absorption towers VOC is connect with black foot collecting pipe, and air inlet is connected to gas collection pipeline；Second
The inlet on the absorption towers VOC is connect with Glycerol Wastewater collecting pipe, and air inlet passes through the row at the top of pipeline and the first absorption towers VOC
Gas port is connected to.
At least 3 layers of gas caching plate are from top to bottom set side by side in tower body.Gas caches plate for circular orifice, on plate body
It is covered with through-hole, through-hole internal diameter 3-5mm.Through-hole on adjacent gas caching plate is staggered.Gas bottom right flows up, and is flowing
It in the process by gas caching plate blocking, and is passed through by through-hole, the through-hole of neighbouring caching plate is staggered, and can extend gas
Residence time, it is ensured that itself and liquid adequate reaction.
It is to be welded and fixed between the excircle and tower body inner wall of gas caching plate.Or gas caching plate and tower body inner wall it
Between be movable connection structure.
Preferably, both sides are provided at least two groups plate, generally three groups to vehicle in tower body inner wall, are in 120 degree
Angle is distributed, and every group of plate includes two thin plates being set up in parallel, and thin plate is horizontally disposed, and side is welded with tower body inner wall, the other side
Vacantly.The periphery of gas caching plate is inserted into plate.
Utilize the method for the VOC of above equipment processing biodiesel enterprise discharge：The VOC gas of methanol column generation, methyl esters
The VOC gas that tower generates are collected by gas collection pipeline to the air inlet on the first absorption towers VOC under air-introduced machine effect；Methyl esters
The black foot of rectifying column lower discharge is sent to the inlet on the first absorption towers VOC after the second heat exchanger and second circulation pump；Gas
After body and liquid are reacted in the first absorption towers VOC, then by the pipeline of tower top be sent to the 2nd absorption towers VOC lower part into
Gas port；
The specific method is as follows：
A, methanol rectifying tower 2 is worked under the conditions of micro-positive pressure, has free gas in process of production（Containing a large amount of methanol gas）
Dissipation comes out, and forms methanol column VOC gas, and closed gas gathering mask is arranged in tower top attachment and the negative-pressure pipeline communicated therewith is arranged
That is methanol column VOC gas collecting pipe；
B, methyl esters rectifying column 4 is to work under vacuum, has a large amount of organic gas in process of production（Containing a large amount of short chain
Ester, short chain alcohol, short chain acids）It is emitted with vacuum tail gas, forms methyl esters tower VOC gas, closed gas collection is set in tower top attachment
It covers and the negative-pressure pipeline i.e. methyl esters tower VOC gas collecting pipe communicated therewith is set；
C, it opens air-introduced machine 12 and the VOC gas that VOC gas and methyl esters tower that methanol column generates generate is passed through into methanol column VOC respectively
Gas-collecting pipe 1 and methyl esters tower VOC gas collecting pipe 3 lead to downstream processes section；
D, black foot 9 of the methyl esters rectifying column 4 after rectifying is in a liquid state at high operating temperatures, through pipeline by 4 bottom of methyl esters rectifying column
Outlet is squeezed into storage tank, opens the second heat exchanger 10, second circulation pump 11, black foot 9 is rapid under the action of the second heat exchanger 10
It is cooled to 50 DEG C --- between 60 DEG C, black foot 9 is in paste, is squeezed into through 11 outlet collateral branch of second circulation pump through overcooled black foot 9
In first absorption towers VOC 14, adsorption tower bottom gas is uniformly distributed through air inlet 21 and gas distributing disc 23 as tiny bubble, black
Foot fills with tower body and slowly flows up, while black foot is sufficiently mixed with VOC gas under the action of gas caches plate 24
After absorption, through absorption tower upper end outlet to black foot export trade 15；
E, reaction kettle 5 isolates Glycerol Wastewater 6 from bottom after the completion of reacting and squeezes into storage tank by 5 outlet at bottom of reaction kettle through pipeline
In, open First Heat Exchanger 7, first circulation pump 8, Glycerol Wastewater 6 be rapidly cooled under the action of First Heat Exchanger 7 10 DEG C-
Between 20 DEG C, through overcooled Glycerol Wastewater 6, through first circulation pump, 8 outlet collateral branch squeezes into the 2nd absorption towers VOC 13, adsorbs
Tower bottom gas is uniformly distributed through air inlet 21 and gas distributing disc 23 as tiny bubble, and crude glycerine fills with tower body and slow
It flows up, while after crude glycerine and VOC gas are sufficiently mixed absorption under the action of gas caches plate 24, through absorption tower upper end
The 16 decontamination water treatment station of Glycerol Wastewater delivery pipe of outlet；
F, there are some micro small molecule VOC to carry out advanced treating through ozone tower 18 in the gas by two-stage absorption, open
Ozone generator 17 and ozone breaker 19, small molecule VOC are quickly converted to inorganic matter and water under the catalysis of inner-tower filling material, with
Qualified discharge is carried out by VOC gas qualified discharge pipe 20 afterwards.
Example 1：
Biodiesel is produced by raw material of gutter oil
When gutter oil is raw material, VOC gas total amount is small, and black foot temperature is adjusted to 60 DEG C, and crude glycerine temperature is adjusted to 20 DEG C, black
The flow velocity of foot and crude glycerine realizes that self-regulated, VOC gas reach national row after two-stage absorption and stair oxidation according to yield
Put standard.
Example 2：
Biodiesel is produced by raw material of acidification oil
When gutter oil is raw material, VOC gas total amount is big, and black foot temperature is adjusted to 50 DEG C, and crude glycerine temperature is adjusted to 10 DEG C, black
The flow velocity of foot and crude glycerine realizes that self-regulated, VOC gas reach national row after two-stage absorption and stair oxidation according to yield
Put standard.
Claims (10)
1. a kind of processing equipment of the VOC of biodiesel enterprise discharge, including gas collection pipeline, waste collection pipeline, VOC gas
Body absorption tower, ozone tower and ozone breaker, it is characterised in that：
The VOC gas absorption tower includes the first absorption towers VOC and the 2nd absorption towers VOC being set up in parallel；
The gas collection pipeline includes the methanol column VOC gas collecting pipe being connected to methanol rectifying tower floss hole and methyl esters essence
Evaporate the methyl esters tower VOC gas collecting pipe of tower floss hole connection；It is inhaled with the first VOC after two articles of VOC gas collecting pipe parallel connections
Receive the connection of tower lower part；
The waste collection pipeline includes the reaction kettle waste collection pipe being connect with the reaction end of reaction kettle and methyl esters rectifying column
React the black foot collecting pipe of end connection；First Heat Exchanger and first circulation are installed on the reaction kettle waste collection pipe
Pump, the reaction kettle waste collection pipe are connected to the 2nd absorption towers VOC lower part；The second heat exchange is installed on the black foot collecting pipe
Device and second circulation pump, the black foot collecting pipe are connected to the first absorption towers VOC lower part；
Gas discharge outlet at the top of first absorption towers VOC is connected to by pipeline with the gas access of the 2nd lower parts VOC；
Gas discharge outlet at the top of 2nd absorption towers VOC is connected to by pipeline with ozone tower lower part；The ozone tower
Lower part is connected to by pipeline with ozone generator；The gas discharge outlet of the ozone top of tower is connected by pipeline and ozone breaker
It is logical.
2. the processing equipment of the VOC of biodiesel enterprise discharge according to claim 1, which is characterized in that the gas
Air-introduced machine is installed in collection conduit.
3. the processing equipment of the VOC of biodiesel enterprise discharge according to claim 1, which is characterized in that the VOC gas
Body absorption tower includes absorption tower tower body, is arranged inside tower body gas caching plate sets up separately and goes out liquid in tower body upper and lower part
Mouth and inlet；Further include the gas distributing disc being arranged in tower body bottom, nozzle, gas distribution are evenly equipped on the gas distributing disc
Pan bottom is connected to by pipeline with the gas collection pipeline；It is provided with gas outlet at the top of the tower body；The inlet setting
Above the gas distributing disc.
4. the processing equipment of the VOC of biodiesel enterprise discharge according to claim 3, which is characterized in that the tower body
Inside from top to bottom it is set side by side at least 3 layers of gas caching plate.
5. the processing equipment of the VOC of biodiesel enterprise discharge according to claim 4, which is characterized in that the gas
Caching plate is circular orifice, is covered with through-hole, through-hole internal diameter 3-5mm on plate body.
6. the processing equipment of the VOC of biodiesel enterprise discharge according to claim 5, which is characterized in that adjacent gas
Through-hole on caching plate is staggered.
7. the processing equipment of the VOC of biodiesel enterprise discharge according to claim 3, which is characterized in that the gas
It is to be welded and fixed between the excircle and tower body inner wall of caching plate.
8. the processing equipment of the VOC of biodiesel enterprise discharge according to claim 3, which is characterized in that the gas
It is movable connection structure to cache between plate and tower body inner wall.
9. the processing equipment of the VOC of biodiesel enterprise discharge according to claim 8, which is characterized in that the tower body
Both sides are provided at least two groups plate to vehicle on inner wall, and every group of plate includes two thin plates being set up in parallel, and thin plate is horizontally disposed,
Side is welded with tower body inner wall, and the other side is hanging；The periphery of the gas caching plate is inserted into plate.
10. the method for VOC using the equipment processing biodiesel enterprise discharge described in any one of claim 1-8 a kind of,
It is characterized in that, the specific method is as follows：
A, methanol rectifying tower works under the conditions of micro-positive pressure, methanol column VOC gas is generated in production process, by methanol column VOC gas
Body collection conduit is sent out；
B, methyl esters rectifying column works under vacuum, and methyl esters tower VOC gas, and methyl esters tower VOC gas are generated in production process
Collection conduit is sent out；
C, it opens air-introduced machine and methanol column VOC gas and methyl esters tower VOC gas is led into downstream by closed gas collection pipeline
Processing section；
D, black foot of the methyl esters rectifying column after rectifying is in a liquid state at high operating temperatures, is exported by methyl esters rectifier bottoms through pipeline
Squeeze into storage tank, open the second heat exchanger, second circulation pump, black foot be rapidly cooled under the action of the second heat exchanger 50 DEG C-
Between 60 DEG C, black foot is in paste, is squeezed into the first absorption towers VOC through second circulation pump discharge collateral branch through overcooled black foot, the
One VOC absorb the bottom of the tower gas is uniformly distributed through air inlet and gas distributing disc as tiny bubble, and black foot fills with tower body simultaneously
It slowly flows up, while after black foot is sufficiently mixed absorption with VOC gas under the action of gas caches plate, through absorption tower upper end
It is exported to black foot export trade；
E, Glycerol Wastewater is isolated from bottom to be squeezed into storage tank by reactor bottom outlet through pipeline, open after the completion of reaction kettle reaction
First Heat Exchanger, first circulation pump are opened, Glycerol Wastewater is rapidly cooled under the action of First Heat Exchanger between 10 DEG C -20 DEG C,
It is squeezed into the 2nd absorption towers VOC through first circulation pump discharge collateral branch through overcooled Glycerol Wastewater, the 2nd VOC absorb the bottom of the tower gas
Body is uniformly distributed through air inlet and gas distributing disc as tiny bubble, and crude glycerine fills with tower body and slowly flows up, together
When after crude glycerine and VOC gas are sufficiently mixed absorption under the action of gas caches plate, through absorption tower upper end outlet to decontaminated water
Treating stations；
F, there are some micro small molecule VOC to carry out advanced treating through ozone tower in the gas by two-stage absorption, open smelly
Oxygen Generator and ozone breaker, small molecule VOC are quickly converted to inorganic matter and water under the catalysis of inner-tower filling material, then up to standard
Discharge.
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| CN201810153217.4A CN108310916B (en) | 2018-02-22 | 2018-02-22 | Treatment equipment and method for VOC (volatile organic compounds) discharged by biodiesel enterprises |
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| CN108310916B (en) | 2022-02-15 |
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Denomination of invention: Equipment and method for treating VOCs emitted by biodiesel enterprises Effective date of registration: 20220914 Granted publication date: 20220215 Pledgee: China Construction Bank Corporation Luannan Sub-branch Pledgor: TANGSHAN JINLIHAI BIODIESEL Corp.,Ltd. Registration number: Y2022990000630 |
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Date of cancellation: 20231117 Granted publication date: 20220215 Pledgee: China Construction Bank Corporation Luannan Sub-branch Pledgor: TANGSHAN JINLIHAI BIODIESEL Corp.,Ltd. Registration number: Y2022990000630 |
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Denomination of invention: Equipment and methods for treating VOC emissions from biodiesel enterprises Effective date of registration: 20231120 Granted publication date: 20220215 Pledgee: China Construction Bank Corporation Luannan Sub-branch Pledgor: TANGSHAN JINLIHAI BIODIESEL Corp.,Ltd. Registration number: Y2023110000483 |