CN108499304A - Petroleum vapor recovery cleaning device - Google Patents
Petroleum vapor recovery cleaning device Download PDFInfo
- Publication number
- CN108499304A CN108499304A CN201810413194.6A CN201810413194A CN108499304A CN 108499304 A CN108499304 A CN 108499304A CN 201810413194 A CN201810413194 A CN 201810413194A CN 108499304 A CN108499304 A CN 108499304A
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- China
- Prior art keywords
- tank
- oil
- adsorption tanks
- clarifier
- buried
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B01D53/002—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 condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
-
- 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
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
-
- 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
- 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
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/402—Further details for adsorption processes and devices using two beds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Petroleum vapor recovery cleaning device proposed by the present invention includes buried tank,Purge tank,Oil water separator,Adsorption tanks,Condensate liquid knockout drum and waste collector,One end of oil water separator is connected by self priming pump with buried tank,The other end is connected by filter with purge tank,Clarifier is additionally provided between oil water separator and filter,Clarifier is connected with waste collector entrance,The outlet of waste collector is connected with filter,The first vacuum pump is additionally provided between clarifier and buried tank,It the cleaning solution after washing away is pumped into clarifier by the first vacuum pump carries out purification separation and go out sump oil and collected again by waste collector,And combine adsorption tanks,Fin tube type air-cooled condenser and condensate liquid knockout drum can form gas recovery system for oil,Condensed oil product is collected by purge tank,Continue as cleaning solution,Buried tank is pumped by high-pressure oil pump to wash away the inner wall of buried tank,And then achieve the purpose that cleaning,Smart structural design,Safety and environmental protection,With extensive popularization and practical value.
Description
Technical field
The present invention relates to petroleum vapor recovery cleaning technique fields, are specifically related to a kind of petroleum vapor recovery cleaning device.
Background technology
Extremely serious evaporating loss is generated since the various volatile organic matters such as gasoline (VOCs) are very easy to volatilization,
So gas station is easy to be filled with " oily taste ".These oil gas are largely evaporated and are directly discharged in air, are not only caused serious
Quantity loss and quality decline, and seriously polluted atmospheric environment and leave great fire hazard.Country formulates
Standard No. is GB20592-2007 standards, forces to carry out installation device for recovering oil and gas in gas station, and storage tank farm is determined, refuels
Exhaust of oil of standing controls standard and implements region and time and exhaust of oil limit value.
Oil-gas recovery method has absorption method, absorption process, condensation method and membrane separation process etc., is applied to the mainly cold of gas station
Solidifying method, absorption method and membrane separation process, the operation principle of absorption method are：(1) when the pressure of buried tank reaches setting value, pass through
Oil gas in air inducing pumping buried tank enters adsorption tanks；(2) utilize in adsorption tanks adsorbent to the affinity of hydrocarbon molecule
Effect, oil gas is detached with air, gas discharging directly into atmosphere up to standard, when adsorption tanks adsorption saturation, is inhaled to saturation using vacuum pump
Attached tank carries out vacuum desorption regenerative operation；(3) the high concentration of hydrocarbon steam of desorption out enters condenser condensation, hydrocarbon vapor portion quilt
It is cooled to liquid to enter in imbibition tank, remaining high concentrations of gas returns buried tank.
But due to the long inactivity of oil product, a large amount of sump oils are formed in buried tank inner surface, in order to improve petroleum vapor recovery
Efficiency and quality, it is necessary to buried tank etc. be cleaned, present cleaning equipment mostly uses artificial cleaning, passes through high pressure water
Washing and cleaning operation is carried out in conjunction with various chemical solvents and cleaning agent, this washing and cleaning operation manpower consumption is big, of high cost, and dangerous system
Number is high, while the dirt that washes down and the sewage containing chemical substance again can generate the environment of surrounding serious pollution and break
It is bad.
Invention content
Technical problem to be solved by the present invention lies in view of the foregoing defects the prior art has, propose a kind of oil gas time
Cleaning device is received, greasy dirt, sludge after reducing artificial cleaning danger coefficient and cleaning etc. will not generate the environment of surrounding dirty
Dye, safety and environmental protection have extensive popularization and practical value.
The present invention is realized using technical solution below：A kind of petroleum vapor recovery cleaning device, including it is buried tank, clear
Cleaning of evaporator, oil water separator, adsorption tanks, condensate liquid knockout drum and waste collector, one end of the oil water separator by one from
Sucking pump is connected with buried tank, and the other end is connected by a filter with purge tank, is also set up between purge tank and buried tank
There is a high-pressure oil pump；A clarifier, the clarifier and waste collection are additionally provided between the oil water separator and filter
Device entrance is connected, and the outlet of waste collector is connected with filter, and sieve is both provided in the clarifier and waste collector
Partition board preferably detaches greasy dirt with liquid layer, and final sump oil is collected by waste collector, so sump oil is made to obtain more
Profound purification, makes scavenging period effectively shorten, while ensure that better cleaning quality；The clarifier and buried tank
Between be additionally provided with the first vacuum pump, by the first vacuum pump the cleaning solution after washing away be pumped into clarifier carry out purification separation go out dirt
Oil is simultaneously collected by waste collector again, and air inducing pump is provided between the adsorption tanks and buried tank, passes through air inducing pumping
Oil gas in buried tank enters adsorption tanks, and adsorption tanks are connected by a fin tube type air-cooled condenser with condensate liquid knockout drum,
And the second vacuum pump is provided between adsorption tanks and fin tube type air-cooled condenser, condensate liquid knockout drum is connected with purge tank,
And it is provided with return line between condensate liquid knockout drum and buried tank, so that high concentrations of gas is flowed back to buried tank, the absorption
It is provided with adsorbent in tank, oil gas is detached with air, gas discharging directly into atmosphere up to standard is utilized when adsorption tanks adsorption saturation
Second vacuum pump carries out vacuum desorption regenerative operation to saturation adsorption tanks, and the high concentration of hydrocarbon steam desorbed enters fin tube type
Air-cooled condenser, in fin tube type air-cooled condenser, hydrocarbon vapor portion is cooled into liquid and enters in condensate liquid knockout drum,
Reinforcement concentration gases return buried tank；Condensed oil product is collected by purge tank, and as cleaning solution, underground is pumped by high-pressure oil pump
Oil tank washes away the inner wall of buried tank, and then achievees the purpose that cleaning.
Further, the purge tank is also associated with a cleaning sprayer, and the cleaning sprayer stretches into buried tank, described
Cleaning sprayer is three-dimensional rotation nozzle, and multiple nozzles are symmetrically installed on three-dimensional rotation nozzle, each to generate multi-angle, intensity
The impact jet flow that different, energy is concentrated, and then underground oil tank base oil mud, tank skin attachment and iron rust are hit, erosion, cut
It cuts, wedge cleaving and removal.
Further, the adsorption tanks include two, and two adsorption tanks are connected in parallel, and are worked alternatively with realizing, when wherein
It when one adsorption tanks saturation, then automatically switches to another adsorption tanks and works on, ensure that device runs without interruption for 24 hours.
Further, air discharge ports after evolving are provided on the adsorption tanks, controls up to par can be directly discharged into air.
Further, second vacuum pump uses speed regulating motor, with the vacuum degree in control pipeline.
Further, the buried tank is that double walled tank is set with effectively overcoming leakage and the leakage of oil gas in buried tank
There is block blast-proof materials, inhibit oil gas volatilization, anti-oil leakage device and detection of gas alarm are installed in double walled tank cavity,
To take emergency measures in time, prevent oil product from leaking or revealing outward the dirt caused to gas station's Soil Surrounding and groundwater resources
Dye and destruction.
Compared with prior art, the advantages and positive effects of the present invention are：
Petroleum vapor recovery cleaning device proposed by the present invention carries out clearly buried tank as cleaning solution using recycling oil product
It washes, in washing and cleaning operation, by absorption, purification, is pressurized, washes away, the processes such as contaminant collecting, make the clean of tank cleaning
Only, it ensure that cleaning quality, and combine adsorption tanks, fin tube type air-cooled condenser and condensate liquid knockout drum that can form petroleum vapor recovery
System, ensure that oil gas recycling and washing and cleaning operation it is safe and reliable, achieved the effect that wash cycles oil tank, not only safety but also ring
It protects, there is extensive popularization and practical value.
Description of the drawings
Fig. 1 is the structural schematic diagram of petroleum vapor recovery cleaning device described in the embodiment of the present invention.
Specific implementation mode
In order to which the above objects, features and advantages of the present invention is more clearly understood, below in conjunction with the accompanying drawings and implement
The present invention will be further described for example.It should be noted that in the absence of conflict, in embodiments herein and embodiment
Feature can be combined with each other.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
With using implementing different from other modes described here, therefore, the present invention is not limited to following public specific embodiments.
As shown in Figure 1, a kind of petroleum vapor recovery cleaning device, including buried tank 1, purge tank 2, oil water separator 3, absorption
One end of tank 4, condensate liquid knockout drum 5 and waste collector 6, the oil water separator 3 passes through a self priming pump 7 and buried tank 1
It is connected, the other end is connected by a filter 8 with purge tank 2, and a high pressure oil is additionally provided between purge tank 2 and buried tank 1
Pump 9；A clarifier 10, the clarifier 10 and waste collector 6 are additionally provided between the oil water separator 3 and filter 8
Entrance is connected, and the outlet of waste collector 6 is connected with filter 8, and sieve is both provided in the clarifier 10 and waste collector 6
Net partition board preferably detaches greasy dirt with liquid layer, and final sump oil is collected by waste collector 6, so sump oil is made to obtain
To deeper purification, scavenging period is made to effectively shorten, while ensure that better cleaning quality；The clarifier 10 and ground
The first vacuum pump 11 is additionally provided between lower oil tank 1, the cleaning solution after being washed away by the first vacuum pump 11 be pumped into clarifier 10 into
Row purification separation goes out sump oil and is collected again by waste collector 6, and air inducing is provided between the adsorption tanks 4 and buried tank 1
Pump 12 enters adsorption tanks 4 by the oil gas in 12 suction buried tank 1 of air inducing pump, and adsorption tanks 4 are air-cooled cold by a fin tube type
Condenser 13 is connected with condensate liquid knockout drum 5, and the second vacuum is provided between adsorption tanks 4 and fin tube type air-cooled condenser 13
Pump 14, condensate liquid knockout drum 5 is connected with purge tank 2, and is provided with return line between condensate liquid knockout drum 5 and buried tank 1
15, so that high concentrations of gas is flowed back to buried tank 1, the adsorption tanks can select two, and two adsorption tanks are connected in parallel, to realize
It works alternatively, when one of adsorption tanks are saturated, then automatically switch to another adsorption tanks and work on, ensure that device 24 is small
When run without interruption, be provided with adsorbent in adsorption tanks 4, oil gas detached with air, be provided on adsorption tanks 4 empty after evolution
Gas floss hole 16, controls up to par can be directly discharged into air, when adsorption tanks adsorption saturation, be inhaled to saturation using the second vacuum pump 14
Attached tank carries out vacuum desorption regenerative operation, and second vacuum pump uses speed regulating motor, with the vacuum degree in control pipeline, desorption
High concentration of hydrocarbon steam out enters fin tube type air-cooled condenser 13, in fin tube type air-cooled condenser 13, hydrocarbon steam portion
Point being cooled into liquid enters in condensate liquid knockout drum 5, remaining high concentrations of gas returns buried tank 1；Condensed oil product is by clear
Cleaning of evaporator 2 is collected, and as cleaning solution, is pumped into buried tank by high-pressure oil pump 9 and is washed away to the inner wall of buried tank, and then reach
The purpose of cleaning.
In the present embodiment, the purge tank is also associated with a cleaning sprayer (not illustrating in figure), and the cleaning sprayer stretches into
In buried tank 1, the cleaning sprayer is three-dimensional rotation nozzle, and multiple nozzles are symmetrically installed on three-dimensional rotation nozzle, with production
The impact jet flow that raw multi-angle, intensity are different, energy is concentrated, and then to underground oil tank base oil mud, tank skin attachment and iron rust
Hit, erosion, cutting, wedge cleaving and removal.Moreover, the buried tank is double walled tank, effectively to overcome the leakage of oil gas
With leakage, buried tank is interior to be equipped with block blast-proof materials (copper or aluminium alloy), inhibits oil gas volatilization, is installed in double walled tank cavity
There are anti-oil leakage device and detection of gas alarm, or explosion-proof video collector and explosion-proof oxygen can be installed in buried tank
Sensor probe is reminded by automatic alarm, to take emergency measures in time, prevent oil product leak or reveal outward cause pair plus
The pollution and destruction of petrol station Soil Surrounding and groundwater resources.
Concrete principle is the remaining sump oil of buried tank to be evacuated to oil water separator by self priming pump, greasy dirt passes through net
Change device and waste collector and filter carries out purification separation, greasy filth dirt is collected by waste collector, and purified oil product then passes through
It crosses filter further to filter, enter by the sump oil oil product of clarifier purification in purge tank as cleaning solution, using high pressure
Cleaning solution is constantly washed away buried tank inner wall by oil pump, then the cleaning solution after washing away is pumped into clarifier by the first vacuum pump simultaneously
It carries out purification separation to go out sump oil and collected again by waste collector, the sludge after cleaning will not generate the environment of surrounding dirty
Dye, when washing and cleaning operation, by remaining a small amount of sump oil in buried tank by adsorbing, purifying, be pressurized, wash away, contaminant collecting etc.
Process ensure that cleaning quality to make doing silently for Oilcan cleaning；Due to being cleaned using purified sump oil oil product
When, it has most of oil gas and generates, for this purpose, generated oil gas is air-cooled cold by adsorption tanks, fin tube type in cleaning simultaneously
Condenser and condensate liquid knockout drum reflux purge tank utilize again, wash cycles, until buried tank cleans up；Moreover, passing through
Adsorption tanks, fin tube type air-cooled condenser and condensate liquid knockout drum can form gas recovery system for oil, and multi-purpose content reduces device
Deployment cost, buried tank cleaning are combined with petroleum vapor recovery, ensure that the safe and reliable of petroleum vapor recovery and washing and cleaning operation, reach
The effect of wash cycles oil tank, it is safety and environmental protection, at low cost, there is extensive promote and practical value.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
It imitates embodiment and is applied to other fields, but it is every without departing from technical solution of the present invention content, according to the technical essence of the invention
To any simple modification, equivalent variations and remodeling made by above example, the protection domain of technical solution of the present invention is still fallen within.
Claims (6)
1. petroleum vapor recovery cleaning device, which is characterized in that including buried tank, purge tank, oil water separator, adsorption tanks, condensation
One end of liquid knockout drum and waste collector, the oil water separator is connected by a self priming pump with buried tank, and the other end is logical
It crosses a filter with purge tank to be connected, a high-pressure oil pump is additionally provided between purge tank and buried tank；
A clarifier, the clarifier and waste collector entrance phase are additionally provided between the oil water separator and filter
Even, the outlet of waste collector is connected with filter, and sieve partition board is both provided in the clarifier and waste collector；
It is additionally provided with the first vacuum pump between the clarifier and buried tank, is provided between the adsorption tanks and buried tank
Air inducing pumps, and adsorption tanks are connected by a fin tube type air-cooled condenser with condensate liquid knockout drum, and in adsorption tanks and fin tube type
The second vacuum pump is provided between air-cooled condenser, condensate liquid knockout drum is connected with purge tank, and condensate liquid knockout drum and underground
Return line is provided between oil tank.
2. petroleum vapor recovery cleaning device according to claim 1, it is characterised in that：The purge tank is also associated with a cleaning
Nozzle, the cleaning sprayer stretch into buried tank, and the cleaning sprayer is three-dimensional rotation nozzle, symmetrical on three-dimensional rotation nozzle
Multiple nozzles are installed.
3. petroleum vapor recovery cleaning device according to claim 2, it is characterised in that：The adsorption tanks include two, two
Adsorption tanks are connected in parallel.
4. petroleum vapor recovery cleaning device according to claim 3, it is characterised in that：After evolution being provided on the adsorption tanks
Air discharge ports.
5. petroleum vapor recovery cleaning device according to claim 4, it is characterised in that：Second vacuum pump is using speed governing electricity
Machine.
6. petroleum vapor recovery cleaning device according to claim 5, it is characterised in that：The buried tank is double walled tank,
Anti-oil leakage device and detection of gas alarm are installed in double walled tank cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810413194.6A CN108499304A (en) | 2018-05-03 | 2018-05-03 | Petroleum vapor recovery cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810413194.6A CN108499304A (en) | 2018-05-03 | 2018-05-03 | Petroleum vapor recovery cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108499304A true CN108499304A (en) | 2018-09-07 |
Family
ID=63399609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810413194.6A Pending CN108499304A (en) | 2018-05-03 | 2018-05-03 | Petroleum vapor recovery cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108499304A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705515A (en) * | 2020-12-22 | 2021-04-27 | 无锡美顿达炼油设备有限公司 | Machine pump equipment raw materials retrieves sled dress equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07328580A (en) * | 1994-06-08 | 1995-12-19 | Nippon Sogo Giken Kk | Tank cleaning method and apparatus |
| US20060243344A1 (en) * | 2003-03-11 | 2006-11-02 | Abb Gas Technology As | System and method for control of gas emissions from oil storage vessel |
| CN101723301A (en) * | 2008-10-28 | 2010-06-09 | 北京石油化工学院 | Oil-gas recycling treatment method and system for gas station by using membrane method |
| CN101935541A (en) * | 2010-08-06 | 2011-01-05 | 宋晓轩 | Method for reclaiming oil and gas in tank car |
| CN202105828U (en) * | 2011-04-14 | 2012-01-11 | 合肥国化石油环保有限公司 | Oil tank cleaning unit |
| CN102921269A (en) * | 2012-11-02 | 2013-02-13 | 江苏航天惠利特环保科技有限公司 | Oil gas recycling device |
| CN102225411B (en) * | 2011-04-14 | 2013-03-13 | 合肥国化石油环保有限公司 | Oil tank cleaning unit |
| CN107837648A (en) * | 2017-11-08 | 2018-03-27 | 北京信诺海博石化科技发展有限公司 | The recovery process of middle low concentration oil gas |
| CN208426830U (en) * | 2018-05-03 | 2019-01-25 | 江苏润宇环境工程有限公司 | Petroleum vapor recovery cleaning device |
-
2018
- 2018-05-03 CN CN201810413194.6A patent/CN108499304A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07328580A (en) * | 1994-06-08 | 1995-12-19 | Nippon Sogo Giken Kk | Tank cleaning method and apparatus |
| US20060243344A1 (en) * | 2003-03-11 | 2006-11-02 | Abb Gas Technology As | System and method for control of gas emissions from oil storage vessel |
| CN101723301A (en) * | 2008-10-28 | 2010-06-09 | 北京石油化工学院 | Oil-gas recycling treatment method and system for gas station by using membrane method |
| CN101935541A (en) * | 2010-08-06 | 2011-01-05 | 宋晓轩 | Method for reclaiming oil and gas in tank car |
| CN202105828U (en) * | 2011-04-14 | 2012-01-11 | 合肥国化石油环保有限公司 | Oil tank cleaning unit |
| CN102225411B (en) * | 2011-04-14 | 2013-03-13 | 合肥国化石油环保有限公司 | Oil tank cleaning unit |
| CN102921269A (en) * | 2012-11-02 | 2013-02-13 | 江苏航天惠利特环保科技有限公司 | Oil gas recycling device |
| CN107837648A (en) * | 2017-11-08 | 2018-03-27 | 北京信诺海博石化科技发展有限公司 | The recovery process of middle low concentration oil gas |
| CN208426830U (en) * | 2018-05-03 | 2019-01-25 | 江苏润宇环境工程有限公司 | Petroleum vapor recovery cleaning device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705515A (en) * | 2020-12-22 | 2021-04-27 | 无锡美顿达炼油设备有限公司 | Machine pump equipment raw materials retrieves sled dress equipment |
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