CN105501684A - Device and method for storing strong fragrant vegetable oil - Google Patents
Device and method for storing strong fragrant vegetable oil Download PDFInfo
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- CN105501684A CN105501684A CN201510892470.8A CN201510892470A CN105501684A CN 105501684 A CN105501684 A CN 105501684A CN 201510892470 A CN201510892470 A CN 201510892470A CN 105501684 A CN105501684 A CN 105501684A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
- B65D81/2069—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
- B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
Abstract
The invention discloses a device and a method for storing strong fragrant vegetable oil. The device and the method have the advantages that a nitrogen closed circulating storing device is provided, and a gas phase closed circulation manner is adopted to conduct nitrogen-filled storage on the strong fragrant vegetable oil, so that flavor components in the strong fragrant vegetable oil can achieve a balance between an oil phase and a gas phase to form a reversible state, the phenomenon that the flavor components in the strong fragrant vegetable oil are discharged from a breather valve, which is caused by gas replacement or gas emptying, is effectively avoided, the problem that the strong fragrant vegetable oil volatilizes and attenuates easily during the storing process is solved really, and the quality of the vegetable oil is improved.
Description
Technical field
The present invention relates to grease storing technology field, be specifically related to a kind of storage facilities and the storage method that can retain grease fragrance within the storage life.
Background technology
Majority of plant oil and fat product all with smell that is distinctive, that deeply like by customer or fragrance separately, as fragrance, the fragrance of giving off a strong fragrance rapeseed oil, the fragrance of tea-seed oil of sesame seed oil.These grease flavor components define the local flavor of grease uniqueness, and give its product stronger region feature, are derivatized to a part for local cooking culture.
But the fragrance of grease is in conventional storage process, can reduce gradually until disappear, its reason is that grease flavor component is made up of multiple volatile matter, in storage can because of a variety of causes is as improper in tank, environmental conditions is poor or storage method not science and cause fragrance thin out or disappear.Find after deliberation, the volatile matter of composition grease flavor component comprises: one, oil plant composition oxidative breakdown produces under specified temp, moisture condition aldehydes, ketone, acids, alcohols material; Two, the heterocycle compound brought by Maillard reaction, poly-mer, as aldehyde-ammonia poly-mer, pyrazine compound; Three, releaser, the degradation product of various oil plant endemic element decomposition, as sulphur glycosides degradation product in sesamol, rapeseed oil in sesame seed oil.Usually our the grease fragrance that smells is actual is that lower-molecular substance is vaporized to separate out and stimulated the sense of smell of people to be formed from grease, and lower-molecular substance recoverable amount is preserved extremely important to fragrance.Grease is contained in non-leakproof tank, its precipitation process is irreversible, and amount of precipitation is larger, and in grease, fragrance matter content is fewer, until smell is thin out, speed of separating out and ambient pressure, grease temperature, factor of vibrating etc. with the area of contact of air and stirring are relevant.The release smell fragrance that conventional oil storage mode continues because of natural cause, giving off a strong fragrance rapeseed oil fragrance disappeared totally substantially 30 day time; In addition by sunshine, influence of temperature change, the precipitation process of fragrance gas is more rapid.And due to oxidative rancidity, easily produce the new lower-molecular substance with unhappy smell, have a strong impact on oil quality.
In order to solve the defect that conventional oil storage method exists, people have developed the storage method filling nitrogen in cooking oil, although the method can isolate grease and oxygen, delay Oxidation of Fat and Oils and go bad, effective reduction is become sour speed and peroxide value ramp-up rate, but on grease fragrance is preserved, the effect of seeming is faint, traces it to its cause, mainly the equipment Shortcomings of oil in reserve, as petrol storage tank is in communication with the outside by breathing valve, during breathing valve work, gas is constantly replaced, and fragrance matter also can be decayed thereupon.How overcoming the defect of volatile, the easy decay of fragrance matter in grease storage process, is grease production enterprise problem in the urgent need to address.
Summary of the invention
For the problems referred to above, the invention provides a kind of storage facilities and storage method of heavy fragrant plant oil, efficiently solve the problem of grease fragrance volatilizing and decay.
For achieving the above object, the technical scheme that the present invention adopts is to provide a kind of storage facilities of heavy fragrant plant oil, and comprise petrol storage tank, it is characterized in that, described petrol storage tank is provided with breathing valve, and petrol storage tank is connected with low-pressure balance tank by breathing valve, equalizing pipe; Low-pressure balance tank is connected with nitrogen compressor by low-pressure inlet pipe; Nitrogen balance tank is connected with nitrogen compressor by high-pressure pipe, and high-pressure pipe is provided with boiler check valve; Nitrogen balance tank is communicated with petrol storage tank tank body by air inlet pipe, air inlet pipe is provided with nitrogen reducing valve, nitrogen balance tank is connected with Nitrogen source gases pipe.
As first preferred version, equalizing pipe is connected with evacuated tube, evacuated tube is provided with exhaust-valve, so that the air when needing in emptying petrol storage tank.
As second preferred version, in petrol storage tank, magnetic flap level gauge is vertically installed, the liquid level change of petrol storage tank can be understood at any time.
As the 3rd preferred version, low-pressure balance tank, nitrogen balance tank are all provided with safety valve, carry out safety guard-safeguard to two balance tanks and whole system.The operation pressure of low-pressure balance tank is 0.1Mpa, and arranging safety valve action pressure on low-pressure balance tank is 0.12MPa; Nitrogen balance tank operation pressure is 0.4-0.6MPa, and arranging safety valve action pressure on nitrogen balance tank is 0.65MPa.When system equipment (nitrogen reducing valve, nitrogen compressor) is malfunctioning, when petrol storage tank internal pressure raises, low-pressure balance tank safety valve auto-action, emission gases, hold-off pressure; When Nitrogen source gases pipe or high-pressure pipe, to lead to gas excessive, and nitrogen balance pressure tank increases, and this tank safety valve opens pressure release automatically.
As the 4th preferred version, Nitrogen source gases pipe is designed with valve.
As the 5th preferred version, described breathing valve is only exhale the breathing valve not inhaling type.
Adopt above-mentioned storage facilities, another technical scheme provided by the invention is a kind of storage method of heavy fragrant plant oil, comprises the steps:
(1) oil storage: heavy fragrant plant oil is pumped in petrol storage tank, oil level height is not more than 90% of petrol storage tank tank body height;
(2) inflation and gas replacement: first check that whether whole equipment is intact, it is appropriate to install; Afterwards, open the valve of Nitrogen source gases pipe, access high pressure nitrogen, high pressure nitrogen is the industrial nitrogen that nitrogen making machine group is produced, and nitrogen gas concn is 98-99.99%, supply gas pressure≤0.6MPa; Nitrogen, through nitrogen balance tank, nitrogen reducing valve, is injected in petrol storage tank; Open the breathing valve on petrol storage tank and the exhaust-valve on equalizing pipe simultaneously, make petrol storage tank Central Plains have air to discharge; When in petrol storage tank, nitrogen gas concn reaches 95%, namely complete the process with the air in nitrogen replacement petrol storage tank, the method detecting nitrogen gas concn adopts nitrogen gas concn detecting instrument, detects the emptying nitrogen gas concn of evacuated tube, when vent gas nitrogen gas concn reaches, show that in tank, concentration meets the demands; After gas replacement terminates, close Nitrogen source gases tube valve, exhaust-valve, nitrogen reducing valve, to normal working, is set to long-term state of opening by regulation safety valve, breathing valve, set reducing valve delivery pressure 150pa respectively, setting Tank's Breather Valve breath pressure 180pa;
(3) grease nitrogen preservation: after filling nitrogen in petrol storage tank, keep minute-pressure state to store, petrol storage tank internal pressure scope is between malleation 150Pa-180Pa; Maintained by decomposition pressures such as breathing valve, nitrogen compressor, nitrogen reducing valve and corresponding pipeline and stablize support system.When petrol storage tank temperature raises or liquid level raises in preserving process, petrol storage tank internal pressure increases, and when malleation is more than 180Pa, the breathing valve that only exhaling on petrol storage tank does not inhale type is exhaled, and breath enters low-pressure balance tank; When malleation is more than 180Pa in low-pressure balance tank, provide signal enabling nitrogen compressor, nitrogen in low-pressure balance of finding time tank, until malleation is less than 130Pa in low-pressure balance tank, nitrogen compressor quits work; Nitrogen compressor emission gases to nitrogen balance tank, blowdown presssure 0.6Mpa; When the decline of petrol storage tank temperature or liquid level reduce and normally reveal, petrol storage tank internal pressure reduces, when malleation is lower than 150Pa, in trend petrol storage tank, nitrogen is supplemented from nitrogen balance tank by reducing valve, when petrol storage tank malleation reaches 150Pa, reducing valve maintains balance, and throughput is close to zero.
Pressure 0.4Mpa-0.6Mpa normally preserved by nitrogen balance tank, and during lower than 0.4Mpa, indicator lamp is glittering, and prompting manual control is supplemented; During higher than 0.6Mpa, the safety valve on nitrogen balance tank opens pressure release automatically.
Advantage of the present invention: the mode adopting gas phase closed cycle, fill nitrogen to heavy fragrant plant oil to store, and a set of nitrogen closing circulating system is provided, grease fragrance matter can not only be made in oil phase, gas phase to reach balance, form reversible state, and effectively prevent because of gas replacement or emptying and make the phenomenon that grease fragrance is taken out of from breathing valve, thus really solve the problem of volatile, the easy decay of Luzhou-flavor vegetable oil fragrance matter in storage process, improve the quality of vegetable oil.
Accompanying drawing explanation
Fig. 1 is the storage facilities structural representation of heavy fragrant plant oil of the present invention
In figure: 1, petrol storage tank, 2, breathing valve, 3, equalizing pipe, 4, low-pressure balance tank, 5, low-pressure inlet pipe, 6, nitrogen compressor, 7, high-pressure pipe, 8, nitrogen balance tank, 9, boiler check valve, 10, air inlet pipe, 11, nitrogen reducing valve, 12, Nitrogen source gases pipe, 13, magnetic flap level gauge, 14, evacuated tube, 15, exhaust-valve, 16, safety valve, 17, valve.
Detailed description of the invention
Now come in conjunction with the drawings and the specific embodiments to set forth the present invention further.
Embodiment one
As shown in Figure 1, the storage facilities of heavy fragrant plant oil comprises petrol storage tank 1, is vertically provided with magnetic flap level gauge 13 in petrol storage tank 1, and petrol storage tank 1 is provided with breathing valve 2, and petrol storage tank 1 is connected with low-pressure balance tank 4 by breathing valve 2, equalizing pipe 3; Equalizing pipe 3 is connected with evacuated tube 14, evacuated tube 14 is provided with exhaust-valve 15; Low-pressure balance tank 4 is connected with nitrogen compressor 6 by low-pressure inlet pipe 5; Nitrogen balance tank 8 is connected with nitrogen compressor 6 by high-pressure pipe 7, high-pressure pipe 7 is provided with boiler check valve 9; Nitrogen balance tank 8 is communicated with petrol storage tank 1 tank body by air inlet pipe 10, air inlet pipe 10 is provided with nitrogen reducing valve 11, nitrogen balance tank 8 is connected with Nitrogen source gases pipe 12, Nitrogen source gases pipe 12 is designed with valve 17; Low-pressure balance tank 4, nitrogen balance tank 8 are all provided with safety valve 16.
Actual mechanical process:
(1) checking computations of charge air, pressure, temperature
For 200 tons of petrol storage tanks, tank diameter 7000mm, height 6500mm, tank volume 250m3, actual store oil 200 tons, volume 218m3, tank body top void volume is 39m3.
Petrol storage tank internal pressure (malleation) is set as 150Pa, and breathing valve pressure (malleation) is set as 180Pa.
Temperature on average 25C °, because sunshine, climate change factor cause range of temperature to be ± 10C °, annual temperature contrast 20C °-40C °.
1, nitrogen loading, ignores the dividing potential drop of grease bubbing during calculating.
Fill nitrogen amount in tank and press PV=mRT/M formulae discovery
m=（P×V×M）/〔8.314×(273.15+t)〕
M: quality, units/kg
P: pressure, unit Pa
V: volume, unit m3
R: constant, 8.314
M: molal weight; 28
T: gas temperature, unit C °.
m=66.1kg。
2, fill nitrogen to complete, storage stage, cause the temperature traverse of breathing valve action.
According to formulae discovery P/T=P '/T '
T’=101480×(273.15+25)/101450=298.2K
I.e. t=298.2-298.15=0.85C °.
When showing that filling nitrogen stores, tank internal pressure is very sensitive to thermotonus, and when temperature traverse is less than 1C °, breathing valve starts action.Also illustrate that oil tank upper gas is uninterruptedly being replaced, owing to displacing gas unavoidably with fragrance matter, therefore the conventional nitrogen storage that fills can not play the effect of preserving fragrance.And the gas of displacement can be collected by low-pressure balance tank by storage facilities of the present invention, input nitrogen balance tank and recycle after nitrogen compressor compression, thus reach the object that fragrance do not leak.
(2) during temperature traverse+10C °, breathing valve air leakage amount
According to formulae discovery V/T=V '/T '
V’=39×(273.15+35)/（273.15+25）=40.3m3。
△V=V'-V=40.3-39=1.3m3。
Quality m=66.1 × 1.3/40.3=2.12kg.
(3) the selecting of major part
1, low-pressure balance tank
1.5m3 basin selected by low-pressure balance tank, and equipment installs DW168 differential pressure power transmitter as pressure detecting instrument.Pressure transformer is controlled nitrogen compressor control circuit by pressure controller, realizes that compressor starts automatically, automatically shut-down operation.Low-pressure balance tank normal pressure is barometric pressure, and accepting the disappointing rear pressure of breathing valve is malleation 180Pa, arranges the safety valve 16 operating pressure 0.12MPa on low-pressure balance tank 4.When system equipment (nitrogen reducing valve, nitrogen compressor) is malfunctioning, when petrol storage tank internal pressure raises, low-pressure balance tank safety valve auto-action, emission gases, hold-off pressure.
2, nitrogen compressor
| Model | Volume capacity m 3/h | Intake pressure Mpa | Exhaust gas pressure Mpa | Electric work power KW |
| ZW-10 | 10 | 0.1 | 0.6 | 3.0 |
| VW-20 | 20 | 0.6 | 2.5 | 4.0 |
3, nitrogen balance tank, belongs to simple pressure container, volume 0.6m3, and nitrogen balance tank operation pressure 0.4-0.6MPa, arranges safety valve action pressure 0.65MPa.When system equipment (nitrogen reducing valve, nitrogen compressor) is malfunctioning, when gas source pipe or high-pressure pipe, to pass into gas excessive, and nitrogen balance pressure tank increases, and this tank safety valve opens pressure release automatically.
4, nitrogen reducing valve is low pressure reducing valve, entrance pressure 0.4Mpa-0.6Mpa, delivery pressure 150pa.To rely on oneself control, do not need extra power.(belong to system core equipment, lectotype selection is most important).
5, other: air inlet pipe DN50, equalizing pipe DN65, evacuated tube DN65, low-pressure inlet pipe DN65, high-pressure pipe DN50, Nitrogen source gases pipe DN50.
(4) concrete store method
1, pumped into by heavy fragrant plant oil in petrol storage tank 1, oil level height is not more than 90% of petrol storage tank 1 tank body height;
2, first check that whether whole equipment is intact, it is appropriate to install; Afterwards, open the valve of Nitrogen source gases pipe 12, access high pressure nitrogen; Nitrogen, through nitrogen balance tank 8, nitrogen reducing valve 11, is injected in petrol storage tank 1; Open the breathing valve 2 on petrol storage tank 1 and the exhaust-valve 15 on equalizing pipe 3 simultaneously, make petrol storage tank 1 Central Plains have air to discharge; When nitrogen gas concn reaches 95% in petrol storage tank 1, namely complete the process with the air in nitrogen replacement petrol storage tank 1; The method detecting nitrogen gas concn adopts nitrogen gas concn detecting instrument to detect evacuated tube vent gas nitrogen gas concn, shows that in tank, concentration meets the demands when vent gas nitrogen gas concn reaches 95%; After gas replacement terminates, close Nitrogen source gases pipe 12 valve, exhaust-valve 15, regulation safety valve 16, breathing valve 2 to normal working; Nitrogen reducing valve 11 is set to long-term state of opening, sets nitrogen reducing valve 11 delivery pressure (malleation) 150pa respectively, setting petrol storage tank 1 breathing valve 2 breath pressure (malleation) 180pa;
3, after filling nitrogen in petrol storage tank 1, keep minute-pressure state, in petrol storage tank 1, positive pressure range is at (in literary composition pressure except pressure during petrol storage tank oil storage be herein that except malleation, other all refers to absolute pressure) between 150Pa-180Pa; When petrol storage tank 1 temperature raises or liquid level raises, petrol storage tank 1 internal pressure increases, and during more than 180Pa, the breathing valve 2 that only exhaling on petrol storage tank 1 does not inhale type is exhaled work, and breath enters low-pressure balance tank 4; When malleation is more than 180Pa in low-pressure balance tank 4, provide signal enabling nitrogen compressor 6, nitrogen in low-pressure balance of finding time tank 4, until malleation is less than 130Pa in low-pressure balance tank 4, nitrogen compressor 6 quits work; Nitrogen compressor 6 emission gases to nitrogen balance tank 8, blowdown presssure 0.6Mpa; When the decline of petrol storage tank 1 temperature or liquid level reduce and normally reveal, petrol storage tank 1 internal pressure reduces, when malleation is lower than 150Pa, nitrogen supplements nitrogen by reducing valve 11 in trend petrol storage tank 1, when petrol storage tank 1 pressure (malleation) reaches 150Pa, reducing valve 11 maintains balance, no longer ventilates;
Nitrogen balance tank 8 normally preserves pressure 0.4Mpa-0.6Mpa, and during lower than 0.4Mpa, indicator lamp is glittering, and prompting manual control is supplemented; During higher than 0.6Mpa, the safety valve 16 on nitrogen balance tank 8 opens pressure release automatically.
During petrol storage tank 1 nitrogen preservation, nitrogen closed cycle between petrol storage tank 1, low-pressure balance tank 4, nitrogen balance tank 8, less evacuate air, therefore reduces grease smell fragrance and runs off.
Claims (8)
1. the storage facilities of heavy fragrant plant oil, comprises petrol storage tank, it is characterized in that, described petrol storage tank is provided with breathing valve, and petrol storage tank is connected with low-pressure balance tank by breathing valve, equalizing pipe; Low-pressure balance tank is connected with nitrogen compressor by low-pressure inlet pipe; Nitrogen balance tank is connected with nitrogen compressor by high-pressure pipe, and high-pressure pipe is provided with boiler check valve; Nitrogen balance tank is communicated with petrol storage tank tank body by air inlet pipe, air inlet pipe is provided with nitrogen reducing valve, nitrogen balance tank is connected with Nitrogen source gases pipe.
2. the storage facilities of heavy fragrant plant oil according to claim 1, is characterized in that, equalizing pipe is connected with evacuated tube, and evacuated tube is provided with exhaust-valve.
3. the storage facilities of heavy fragrant plant oil according to claim 1, is characterized in that, is vertically provided with magnetic flap level gauge in petrol storage tank.
4. the storage facilities of heavy fragrant plant oil according to claim 1, is characterized in that, low-pressure balance tank, nitrogen balance tank are all provided with safety valve.
5. the storage facilities of heavy fragrant plant oil according to claim 1, is characterized in that, Nitrogen source gases pipe is designed with valve.
6. the storage facilities of heavy fragrant plant oil according to claim 1, is characterized in that, described breathing valve is only exhale the breathing valve not inhaling type.
7. the storage method of the heavy fragrant plant oil storage facilities of application described in above-mentioned any claim, comprises the steps:
(1) oil storage: heavy fragrant plant oil is pumped in petrol storage tank, oil level height is not more than 90% of petrol storage tank tank body height;
(2) inflation and gas replacement: first check that whether whole equipment is intact, it is appropriate to install; Afterwards, open the valve of Nitrogen source gases pipe, access high pressure nitrogen; Nitrogen, through nitrogen balance tank, nitrogen reducing valve, is injected in petrol storage tank; Open the breathing valve on petrol storage tank and the exhaust-valve on equalizing pipe simultaneously, make petrol storage tank Central Plains have air to discharge; When nitrogen gas concn reaches 95% in petrol storage tank, namely complete the process with the air in nitrogen replacement petrol storage tank; After gas replacement terminates, close Nitrogen source gases tube valve, exhaust-valve, nitrogen reducing valve, to normal working, is set to long-term state of opening by regulation safety valve, breathing valve, set reducing valve delivery pressure 150pa respectively, setting Tank's Breather Valve breath pressure 180pa;
(3) grease nitrogen preservation: after filling nitrogen in petrol storage tank, keep minute-pressure state to store, petrol storage tank internal pressure scope is between 150Pa-180Pa.
8. storage method according to claim 7, is characterized in that, pressure 0.4Mpa-0.6Mpa normally preserved by nitrogen balance tank, and during lower than 0.4Mpa, indicator lamp is glittering, and prompting manual control is supplemented; During higher than 0.6Mpa, on nitrogen balance tank, safety valve opens pressure release automatically.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106701314A (en) * | 2017-02-17 | 2017-05-24 | 无锡市新耀生物工程技术有限公司 | Fish oil winterizing, fractioning, crystallizing and growing reaction tank |
| CN106833896A (en) * | 2017-01-10 | 2017-06-13 | 欧阳鹏飞 | The circulation transportation system of one vegetable oil flavor substance and processing technology |
| CN107963354A (en) * | 2017-11-22 | 2018-04-27 | 中国储备粮管理总公司 | A kind of oil storage tank nitrogen controlled atmosphere technique |
| CN109173673A (en) * | 2018-10-25 | 2019-01-11 | 山东环达环保科技有限公司 | Tar slag-drip opening slag-draining device and exhaust gas treating method and device |
| CN110654730A (en) * | 2019-09-27 | 2020-01-07 | 浙江都邦药业股份有限公司 | Polypropylene infusion canning device and production process |
| CN111086784A (en) * | 2019-12-18 | 2020-05-01 | 浙江信汇新材料股份有限公司 | Automatic pressure supplementing and relieving process system for low-pressure tank of normal-pressure tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109173673A (en) * | 2018-10-25 | 2019-01-11 | 山东环达环保科技有限公司 | Tar slag-drip opening slag-draining device and exhaust gas treating method and device |
| CN110654730A (en) * | 2019-09-27 | 2020-01-07 | 浙江都邦药业股份有限公司 | Polypropylene infusion canning device and production process |
| CN111086784A (en) * | 2019-12-18 | 2020-05-01 | 浙江信汇新材料股份有限公司 | Automatic pressure supplementing and relieving process system for low-pressure tank of normal-pressure tank |
| CN111086784B (en) * | 2019-12-18 | 2022-04-08 | 浙江信汇新材料股份有限公司 | Automatic pressure supplementing and relieving process system for low-pressure tank of normal-pressure tank |
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