CN105921295A - Feed atomization nozzle - Google Patents
Feed atomization nozzle Download PDFInfo
- Publication number
- CN105921295A CN105921295A CN201610476276.6A CN201610476276A CN105921295A CN 105921295 A CN105921295 A CN 105921295A CN 201610476276 A CN201610476276 A CN 201610476276A CN 105921295 A CN105921295 A CN 105921295A
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- China
- Prior art keywords
- steam
- expansion
- feedstock oil
- nozzle
- inner tube
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G11/00—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
Abstract
The invention discloses a feed atomization nozzle. The feed atomization nozzle comprises a nozzle, an outer pipe, an inner pipe, a raw material oil inlet, a steam inlet and a steam hole plate; raw material oil enters the inner pipe for acute shrinkage by a shrinkage section and primary atomization through a throat pipe section and the shrinkage section; steam further impacts and crushes the raw material oil in a mixing chamber, that is, the secondary atomization is performed; the steam is carried with the raw material oil to enter nozzle outlets of the nozzle for ternary atomization; and the nozzle outlets of the nozzle have multiple arrangement forms, so that the steam is carried with the raw material oil for spraying to form a wide screen, the full contact and reaction between the raw material oil and a catalyst are facilitated, and meanwhile, the crushing of the catalyst is effectively reduced.
Description
Technical field
The invention belongs to petroleum refining field catalytic cracking unit, relate generally to the efficient feed nozzle of change cracking of a kind of multistage atomizing.
Background technology
Raw material oil feeding atomizing nozzle is a visual plant of petroleum refining field catalytic cracking unit, its effect is: first that feedstock oil is broken, atomization is substantial amounts of fine drop, again raw material oil droplet is injected in catalytic cracking riser reactor, mixes with the catalyst in riser reactor, react.The form of the raw material oil feeding atomizing nozzle being currently used for catalytic cracking unit has a lot, such as, there are a cast, trunnion type, Y type, spiral blade profile, cone target type and all kinds of target type nozzle, domestic nozzle has single-tube nozzle, i.e. using single tube chamber to feed air inlet mixed aerosol, using effect is less desirable.
Nozzle makes reaction raw materials become droplet, it is therefore an objective to energy Quick-gasifying also reacts, and atomization is not final purpose, improves reaction effect and is only target.For the reaction result reached, i.e. need to make the liquid atomization, need again to make atomization logistics distribute in reactor, be especially critically important with catalyst uniform contact.
Further, since the liquid mist such as feedstock oil to be made turn to fine particle, need higher pressure drop and gas flow rate.The gas-liquid atomization logistics of prior art high speed is injected directly into reactor, washes away catalyst broken more serious.
But in actual use, said nozzle more or less also exists problems with: one is that the atomizing effect of feedstock oil needs to be improved further；Two is that the feedstock oil being injected in riser reactor by nozzle is not wide with catalyst contact surface, and reaction effect is the best；The raw material oil droplet jet velocity that three has been the atomization that has nozzle to spray is too high, makes catalyst breakage serious.
The present invention proposes a kind of atomizing feed nozzle, makes feedstock oil obtain multistage atomizing, effectively eliminates major diameter drop, thus reach the atomizing particle size required by catalytic cracking process.Research to shower nozzle simultaneously finds, shower nozzle sprays into the feedstock oil of riser reactor and contacts with catalyst, reacts insufficient, it is owing to the arrangement form of conventional jet expansion is unfavorable for the diffusion of feedstock oil, the present invention proposes four kinds of nozzle structure forms, the jet expansion center line of shower nozzle both sides and nozzle-axis angle are 0-30 °, nozzle surface is deflected to both sides by middle part, it is 0-30 ° with radial direction angle, this setting makes raw material oil droplet spread to both sides after being sprayed into riser reactor by nozzle, form broad curtain screen, bigger with the contact surface of catalyst.It addition, jet expansion is provided with expansion segment, through circulation area expansion segment during the ejection of raw material oil droplet, owing to atomization gas density is little, along with the increase of circulation area is slowed down rapidly, reduce the situation of catalyst breakage.
Summary of the invention
It is an object of the invention to provide a kind of atomizing feed nozzle so that it is the multistage atomizing to feedstock oil can be realized, effectively eliminate major diameter drop, when nozzle sprays, form broader curtain screen so that feedstock oil contacts more fully with catalyst, reacts simultaneously.
For solving the problems referred to above, the technical scheme is that
A kind of atomizing feed nozzle, described nozzle includes shower nozzle, outer tube, inner tube, feedstock oil entrance, steam inlet and steam orifice plate；Described steam orifice plate is arranged between inner tube expansion segment and outer tube, between steam orifice plate, outer tube and inner tube, form toroidal cavity constitute vaporium, and steam inlet is set in steam orifice plate logistics upstream, the concave regions between steam orifice plate and shower nozzle and inner tube outlet constitutes mixed aerosol room；Described inner tube has shrinkage expansion range of atomization, i.e. has expansion segment, aditus laryngis section, contraction section；The described steam multiple steam fumarole of orifice plate circle distribution, the multiple jet expansion of shower nozzle circle distribution.
The inner tube of described atomizing feed nozzle can have multiple shrinkage expansion range of atomization, i.e. has many groups and forms the expansion segment of logistics acceleration-deceleration, aditus laryngis section and contraction section.
The steam orifice plate of above-mentioned atomizing feed nozzle is determined around the steam fumarole of inner tube expansion segment circle distribution N number of φ D, N, D by the treating capacity of feedstock oil.Steam fumarole and jet expansion one_to_one corresponding, i.e. number, orientation are the most consistent.
Steam fumarole can be located on inner tube expansion segment.
The shower nozzle circumference of described atomizing feed nozzle arranges multiple jet expansion, the structure of jet expansion is set to wikipedia type, i.e. it is made up of contraction section, aditus laryngis section, expansion segment, this structure can make feedstock oil obtain third level atomization, form deceleration area at expansion segment simultaneously, effectively solve the too high problem making catalyst breakage serious of raw material oil droplet jet velocity；The layout of jet expansion may be configured as the various arrangement forms such as circular uniform, oval or layout that is that limit vertical direction width；The surface of spray outlet end is designed as the tangent plane that steering angle is α in the horizontal direction, and α is 0-30 °, and jet expansion center line is that β, β are 0-30 ° in the horizontal direction with shower nozzle axis angle；Arrangement above makes steam carry after feedstock oil is sprayed by jet expansion to expand to horizontal both sides in sector, form broader steam curtain screen, so that feedstock oil is fully reacted with catalyst.
The shower nozzle circumference of described atomizing feed nozzle arranges multiple jet expansion, and the jet expansion above spray outlet end face horizontal axis deflects down C1 angle at Way out；Outlet below spray outlet end face horizontal axis upward deflects C2 angle at Way out；The outlet streams making diverse location is pooled to flat area in reactor；Corresponding different C1 and the C2 numerical value of outlet away from spray outlet end face vertical center line different distance.
The jet expansion inner surface of shower nozzle or jet expansion contraction section inner surface or jet expansion contraction section and aditus laryngis section inner surface could be arranged to leafy grass shape, preferentially being set to bunge bedstraw herb shape, this setting makes third level atomizing steam higher to impact, the breaking capacity of feedstock oil.
Heated and have the feedstock oil of certain pressure in feedstock oil entrance enters inner tube, owing to the contraction section of inner tube is tapered, further through aditus laryngis section and expansion segment after circulation area contraction, feedstock oil accelerates to make contraction section inwall impact feedstock oil, crush at contraction section, make feedstock oil obtain for the first time to be atomized, organize expansion segment, aditus laryngis section and contraction section owing to inner tube can be arranged more, make steam carry feedstock oil repeatedly acceleration-deceleration, now impact grinding ability is higher, and atomizing effect is more preferable；Steam enters vaporium through steam inlet, and enter mixed aerosol room after being accelerated by the steam fumarole that circle distribution on steam orifice plate is multiple, impact with the feedstock oil flowing into mixed aerosol room above by inner tube expansion segment, mix, to its further atomization, it is atomized even if feedstock oil obtains second time, simultaneously because multiple steam fumaroles of circle distribution are around inner tube expansion segment on steam orifice plate, form steamdrum and round feedstock oil and carry at a high speed feedstock oil flowing, reduce the gathering in Bian Bi region of the big drop, strengthen atomizing effect；Steam carries feedstock oil and enters the jet expansion on shower nozzle, and owing to jet expansion has contraction section, aditus laryngis section, circulation area is shunk and made steam accelerate further to be impacted feedstock oil, crush at contraction section, forms third time atomization.Through three grades of atomizations, major diameter drop can be effectively eliminated so that the feedstock oil entering riser reactor is fully contacted with catalyst, reacts, thus improves reaction yield.
Control owing to each jet expansion direction to have been carried out design, carry out the expansion of β angle in the horizontal direction, carry out C1 and C2 angular direction at vertical direction to flow to react outside spray outlet end at atomization logistics jet length L of requirement and converge, the oil and gas logistics making porous flow out forms flat distribution band in reactor, sufficiently can contact gasification, reaction with the catalyst in reactor.C1 and C2 value is determined by L.
The atomizing feed nozzle of the present invention, compared with prior art, has a following beneficial effect:
1, use the repeatedly acceleration-deceleration structure to logistics, make the speed difference of atomization gas and liquid repeatedly change and realize multistage atomizing, effectively eliminate major diameter drop, thus reach the atomizing particle size required by catalytic cracking process；
2, this jet expansion arrangement form makes steam form broader and flat vapor oil air curtain screen after carrying feedstock oil ejection, so that feedstock oil and catalyst are fully contacted, react, improves yield；
3, this jet expansion is provided with deceleration area, solves the too high problem making catalyst breakage serious of raw material oil droplet jet velocity.
Accompanying drawing explanation
Fig. 1-Fig. 9 is atomizing feed nozzle structure chart, specifically:
Fig. 1: atomizing feed nozzle structural representation；
Fig. 2: inner tube 7 arranges the atomizing feed nozzle structural representation of many group scaling sections；
The structural representation of Fig. 3: A-A sectional view；
Fig. 4: steam fumarole 4A is arranged on the atomizing feed nozzle structural representation on inner tube 7 expansion segment 9；
The schematic diagram of four kinds of structures of Fig. 5-8: shower nozzle 8；
The structural representation of Fig. 9: C-C sectional view.
nullIn figure: 1、Feedstock oil entrance，2、Steam inlet，3、Vaporium，4、Steam orifice plate，5、Mixed aerosol room，6、Outer tube，7、Inner tube，8、Shower nozzle，9、Expansion segment，10、Aditus laryngis section，11、Contraction section，4A、Steam fumarole，8A、Jet expansion，8B、Jet expansion expansion segment，8C、Jet expansion aditus laryngis section，8D、Jet expansion contraction section，α、Spray outlet end surfaces horizontal direction angle of inclination，β、Jet expansion center line horizontal direction angle，A1、Inner tube expansion segment angle，B1、Internal tube shrinks section angle，A2、Jet expansion expansion angle，B2、Jet expansion converging angles，C1、Shower nozzle horizontal axis nozzle above outlet vertical direction inclination angle，C2、Jet expansion vertical direction inclination angle below shower nozzle horizontal axis，a、Jet expansion vertical direction distributing position，b、Jet expansion horizontal direction distributing position，L、The atomization logistics jet length that reaction requires，φ1、Jet expansion throat diameter，φ2、Leafy grass diameter，φ3、Inner tube aditus laryngis section diameter.
Detailed description of the invention
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings, it is intended to helps the feature of the reader understanding present invention and essence, but the drawings and specific embodiments content be not limiting as the present invention can practical range.
As it is shown in figure 1, a kind of atomizing feed nozzle, described nozzle includes shower nozzle 8, outer tube 6, inner tube 7, feedstock oil entrance 1, steam inlet 2 and steam orifice plate 4；Described steam orifice plate 4 is arranged between inner tube 7 expansion segment 9 and outer tube 6, between steam orifice plate 4, outer tube 6 and inner tube 7, form toroidal cavity constitute vaporium 3, and steam inlet 2 is set in steam orifice plate 4 logistics upstream, the concave regions between steam orifice plate 4 and shower nozzle 8 and inner tube 7 outlet constitutes mixed aerosol room 5；Described inner tube 7 has shrinkage expansion range of atomization, i.e. has expansion segment 9, aditus laryngis section 10, contraction section 11；Described steam orifice plate 4 multiple steam fumarole 4A of circle distribution, shower nozzle 8 circle distribution multiple jet expansion 8A.
As in figure 2 it is shown, the inner tube 7 of described atomizing feed nozzle can have multiple shrinkage expansion range of atomization, i.e. have many group expansion segments 9, aditus laryngis section 10 and contraction section 11, this example is 3 groups.
As it is shown on figure 3, the steam orifice plate 4 of above-mentioned atomizing feed nozzle is determined around steam fumarole 4A of inner tube 7 expansion segment 9 circle distribution N number of φ D, N, D by the treating capacity of feedstock oil.Steam fumarole 4A and jet expansion 8A one_to_one corresponding, i.e. number, orientation are the most consistent.
As shown in Figure 4, steam fumarole 4A can be located on inner tube 7 expansion segment 9.
As shown in Fig. 5,6,7, shower nozzle 8 circumference arranges multiple jet expansion 8A, the structure of jet expansion 8A is set to wikipedia type, i.e. it is made up of contraction section 8D, aditus laryngis section 8C, expansion segment 8B, this structure can make feedstock oil obtain third level atomization, form deceleration area at expansion segment 8B simultaneously, effectively solve the too high problem making catalyst breakage serious of raw material oil droplet jet velocity；The layout of jet expansion 8A may be configured as the various arrangement forms such as circular uniform, oval or layout that is that limit vertical direction width；The surface of shower nozzle 8 port of export is designed as the tangent plane that steering angle is α in the horizontal direction, and α is 0-30 °, and jet expansion 8A center line is that β, β are 0-30 ° in the horizontal direction with shower nozzle axis angle；Arrangement above make steam carry feedstock oil by jet expansion 8A spray after in sector to both sides expand, form broader steam curtain screen, so that feedstock oil is fully reacted with catalyst.
As it is shown in figure 9, the jet expansion 8A above shower nozzle 8 exit end face horizontal axis deflects down C1 angle at Way out；Jet expansion 8A below shower nozzle 8 exit end face horizontal axis upward deflects C2 angle at Way out；The outlet streams making diverse location is pooled to flat area in reactor；Corresponding different C1 and the C2 numerical value of outlet away from shower nozzle 8 exit end face vertical center line different distance.
As shown in Figure 8, the jet expansion 8A inner surface of shower nozzle 8 or jet expansion 8A contraction section 8D inner surface or jet expansion 8A contraction section 8D and aditus laryngis section 8C inner surface are set to leafy grass shape, preferentially being set to bunge bedstraw herb shape, this setting makes third level atomizing steam higher to impact, the breaking capacity of feedstock oil.
Heated and have the feedstock oil of certain pressure in feedstock oil entrance 1 enters inner tube 7, owing to the contraction section 11 of inner tube 7 is tapered, further through aditus laryngis section 10 and expansion segment 9 after circulation area contraction, feedstock oil accelerates to make contraction section 11 inwall impact feedstock oil, crush at contraction section 11, make feedstock oil obtain for the first time to be atomized, owing to inner tube 7 can arrange many group expansion segments 9, aditus laryngis section 10 and contraction section 11, steam is made to carry feedstock oil repeatedly acceleration-deceleration, now impact grinding ability is higher, and atomizing effect is more preferable；Steam enters vaporium 3 through steam inlet 2, and enter mixed aerosol room 5 after being accelerated by steam fumarole 4A that circle distribution on steam orifice plate 4 is multiple, impact with the feedstock oil flowing into mixed aerosol room 5 above by inner tube 7 expansion segment 9, mix, to its further atomization, it is atomized even if feedstock oil obtains second time, simultaneously because multiple steam fumaroles 4A of circle distribution are around inner tube 7 expansion segment 9 on steam orifice plate 4, form steamdrum and round feedstock oil and carry at a high speed feedstock oil flowing, reduce the gathering in Bian Bi region of the big drop, strengthen atomizing effect；Steam carries feedstock oil and enters the jet expansion 8A on shower nozzle 8, and owing to jet expansion 8A has contraction section 8D, aditus laryngis section 8C, circulation area is shunk and made steam accelerate further to be impacted feedstock oil, crush at contraction section 8D, forms third time atomization.Through three grades of atomizations, major diameter drop can be effectively eliminated so that the feedstock oil entering riser reactor is fully contacted with catalyst, reacts, thus improves reaction yield.
Control owing to each jet expansion 8A direction to have been carried out design, carry out the expansion of β angle in the horizontal direction, carry out C1 and C2 angular direction at vertical direction to flow to react outside shower nozzle 8 port of export at atomization logistics jet length L of requirement and converge, the oil and gas logistics making porous flow out forms flat distribution band in reactor, sufficiently can contact gasification, reaction with the catalyst in reactor.C1 and C2 value is determined by L.
Claims (10)
1. an atomizing feed nozzle, it is characterised in that it includes shower nozzle (8), outer tube (6), inner tube (7), feedstock oil entrance (1), steam inlet (2) and steam orifice plate (4)；Described steam orifice plate (4) is arranged between inner tube (7) expansion segment (9) and outer tube (6), between steam orifice plate (4), outer tube (6) and inner tube (7), form toroidal cavity constitute vaporium (3), and steam inlet (2) is set in steam orifice plate (4) logistics upstream, the concave regions between steam orifice plate (4) and shower nozzle (8) and inner tube (7) outlet constitutes mixed aerosol room (5)；Described inner tube (7) has shrinkage expansion range of atomization, i.e. has expansion segment (9), aditus laryngis section (10), contraction section (11)；The described multiple steam fumarole of steam orifice plate (4) circle distribution (4A), the multiple jet expansion of shower nozzle (8) circle distribution (8A).
2. atomizing feed nozzle as claimed in claim 1, it is characterised in that the inner tube (7) of atomizing feed nozzle can have multiple shrinkage expansion range of atomization, i.e. has and organizes expansion segment (9), aditus laryngis section (10) and contraction section (11) more.
3. atomizing feed nozzle as claimed in claim 1, it is characterised in that the steam orifice plate (4) of atomizing feed nozzle is determined around the steam fumarole (4A) of inner tube (7) expansion segment (9) circle distribution N number of φ D, N, D by the treating capacity of feedstock oil；Steam fumarole (4A) and jet expansion (8A) one_to_one corresponding, i.e. number, orientation are the most consistent.
4. atomizing feed nozzle as claimed in claim 1, it is characterised in that steam fumarole (4A) can be arranged on inner tube (7) expansion segment (9).
5. atomizing feed nozzle as claimed in claim 1, it is characterised in that shower nozzle (8) circumference arranges multiple jet expansion (8A), and the structure of jet expansion (8A) is set to be made up of contraction section (8D), aditus laryngis section (8C), expansion segment (8B).
6. the atomizing feed nozzle as described in claim 1 or 5, it is characterised in that the layout of jet expansion (8A) may be configured as the various arrangement forms such as circular uniform, oval or layout that is that limit vertical direction width.
7. the atomizing feed nozzle as described in claim 1 or 6, it is characterized in that, the surface of shower nozzle (8) port of export is designed as the tangent plane that inclination angle is α in the horizontal direction, and α is 0-30 °, jet expansion (8A) center line is that β, β are 0-30 ° in the horizontal direction with shower nozzle axis angle；Arrangement above make steam carry feedstock oil by jet expansion (8A) spray after in sector to both sides expand, form broader steam curtain screen, so that feedstock oil is fully reacted with catalyst.
8. the atomizing feed nozzle as described in claim 1 or 7, it is characterised in that the jet expansion (8A) above shower nozzle (8) exit end face horizontal axis deflects down C1 angle at Way out；Jet expansion (8A) below shower nozzle (8) exit end face horizontal axis upward deflects C2 angle at Way out；The outlet streams making diverse location is pooled to flat area in reactor；Corresponding different C1 and the C2 numerical value of outlet away from shower nozzle (8) exit end face vertical center line different distance, C1 and C2 is determined by the atomization logistics jet length L value reacting requirement.
9. atomizing feed nozzle as claimed in claim 1, it is characterized in that, jet expansion (8A) inner surface of shower nozzle (8) or jet expansion (8A) contraction section (8D) inner surface or jet expansion (8A) contraction section (8D) and aditus laryngis section (8C) inner surface are set to leafy grass shape, and this setting makes third level atomizing steam higher to impact, the breaking capacity of feedstock oil.
10. atomizing feed nozzle as claimed in claim 1, it is characterized in that, feedstock oil enters in inner tube (7), owing to the contraction section (11) of inner tube (7) is tapered, further through aditus laryngis section (10) and expansion segment (9) after circulation area contraction, feedstock oil is impacted in contraction section (11) accelerates to make contraction section (11), crushes by feedstock oil, makes feedstock oil atomized；Steam enters mixed aerosol room (5) after being accelerated by the steam fumarole (4A) that the upper circle distribution of steam orifice plate (4) is multiple, mix with the feedstock oil flowing into mixed aerosol room (5) above by inner tube (7) expansion segment (9), to its further atomization, even if feedstock oil obtains second time and is atomized；Steam carries feedstock oil and enters the jet expansion (8A) on shower nozzle (8), owing to jet expansion (8A) has contraction section (8D), aditus laryngis section (8C), circulation area is shunk and is made steam accelerate further to be impacted feedstock oil, crush at contraction section (8D), forms third level atomization.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476276.6A CN105921295B (en) | 2016-06-27 | 2016-06-27 | A kind of atomizing feed nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476276.6A CN105921295B (en) | 2016-06-27 | 2016-06-27 | A kind of atomizing feed nozzle |
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| CN105921295A true CN105921295A (en) | 2016-09-07 |
| CN105921295B CN105921295B (en) | 2019-03-26 |
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| CN201610476276.6A Active CN105921295B (en) | 2016-06-27 | 2016-06-27 | A kind of atomizing feed nozzle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106479660A (en) * | 2016-12-25 | 2017-03-08 | 重庆海国科技有限公司 | Three-level fine vacuum oil filtering system |
| CN107185360A (en) * | 2017-05-15 | 2017-09-22 | 湘潭大学 | High-efficient washing method |
| CN107939394A (en) * | 2017-12-18 | 2018-04-20 | 淮北矿业（集团）有限责任公司 | A kind of fully-mechanized digging machine external sprayer |
| CN108421822A (en) * | 2018-02-24 | 2018-08-21 | 崔云华 | The restoration and treatment device and its administering method of medicament atomizing spray pollution administration soil |
| CN108996588A (en) * | 2017-06-06 | 2018-12-14 | 松下知识产权经营株式会社 | VOC refining plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108421822A (en) * | 2018-02-24 | 2018-08-21 | 崔云华 | The restoration and treatment device and its administering method of medicament atomizing spray pollution administration soil |
| CN108421822B (en) * | 2018-02-24 | 2019-11-08 | 鸿灌环境技术有限公司 | The restoration and treatment device and its administering method of medicament atomizing spray pollution administration soil |
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| Publication number | Publication date |
|---|---|
| CN105921295B (en) | 2019-03-26 |
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