CN104606696B - EO sterilising prods force desorption apparatus and force desorption method - Google Patents
EO sterilising prods force desorption apparatus and force desorption method Download PDFInfo
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- CN104606696B CN104606696B CN201410853766.4A CN201410853766A CN104606696B CN 104606696 B CN104606696 B CN 104606696B CN 201410853766 A CN201410853766 A CN 201410853766A CN 104606696 B CN104606696 B CN 104606696B
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Abstract
The invention discloses a kind of EO sterilising prods to force desorption apparatus and desorption method.Device include heating air-supply between, desorption between, between air draft, unpack between；Pressure fan and return air diversion window are set on partition wall between heating is blown between desorption；Air exhausting device and air draft diversion window are set on partition wall between desorption between air draft；Heating oil heater is set in heating air-supply；Set on exterior wall between heating air-supply into aeration device.Desorption method：Product to be desorbed is put into and forced in desorption apparatus, automatic heating to certain temperature, which is incubated, to be desorbed；It is evacuated afterwards by air exhausting device；Then again while pumping by entering aeration device tonifying Qi, thus taken a breath；Ventilation terminates to restart to heat up again, is incubated desorption, pumping ventilation, so repeatedly until residual EO is fully separated out in product.Product E O residual solutions can be drawn to standard limits by the present invention in a short time, effectively removed the residual EO in product, improved the security that product uses, realize effective control of risk.
Description
Technical field
Desorption apparatus is forced the present invention relates to a kind of EO sterilising prods and forces desorption method, i.e., a kind of product that is applied to passes through
The device and method of EO residuals in desorption product is forced after EO sterilizings in short time.
Background technology
Oxirane has the characteristics of penetration power is strong, does not damage sterilizing article, therefore majority should not use what conventional method sterilized
The equal epoxy available ethane sterilization of article and sterilizing.It is widely used in aseptic medical equipment field at present.
Oxirane (EO) is inflammable and explosive toxic gas, molecular formula C2H4O, has the ether taste of fragrance, at 4 DEG C
It is 0.884 to wait relative density, and boiling point is 10.8 DEG C, and its density is 1.52g/cm3, at ambient temperature, it is easy to evaporate into gas
Body (olfact is 760mg/m~1064mg/m), it can set off an explosion when the concentration is too high (its minimum burning concentration is 3%).Through
Residual ethylene oxide and its two byproduct chlorethanol ethane and second two in product and packaging material after ethylene oxide sterilizing
Alcohol ethane；Contact excess ethylene oxide residual can cause patient to burn and stimulate.
Product should control EO residual quantities to be let pass when reaching limit as defined in standard after EO sterilizes.Due to former EO
Desorption is carried out using natural ventilating method, and its effect and validity are directly by the environmental influence of storage product, although should
For method by checking, but in actual product lets pass management, the EO residual quantities contained by product still have larger difference, there is
Potential risk.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind in a short time to remain product E O
The EO sterilising prods that solution is drawn to standard limits force desorption apparatus (forcing desorption room) and force desorption method.Effectively to remove
Residual EO in product, the security that product uses is improved, intend using compulsory desorption technique measure method, to realize risk
Effectively control, it is ensured that clearance product meets standard regulation.
Technical scheme is as follows：
A kind of EO sterilising prods force desorption apparatus, it includes between heating air-supply, between desorption, between air draft, unpack between；Desorption
Between with being connected between unpacking, and be provided with inlet/outlet between the two；Heating air-supply between be connected between desorption, heating air-supply between with desorption
Between between partition wall be provided with pressure fan and return air diversion window, wherein, return air diversion window is located at the top of partition wall, and pressure fan is located at
The middle and lower part of partition wall；Between desorption between air draft between partition wall on be provided with air exhausting device and air draft diversion window, wherein, air draft dress
The top of partition wall is set in, air draft diversion window has a row, is located at the middle and lower part of partition wall；More heating are provided with heating air-supply
Oil heater；It is provided with exterior wall between heating is blown into aeration device.
Enter aeration device to be made up of electronic adjustable new air-valve and leaf filter, leaf filter and electronic adjustable new air-valve
Entrance connection, electronic adjustable new air-valve is provided with YE, can automatically adjust valve and be opened and closed angle.Fresh air is (i.e. fresh
Air) filtered by the leaf filter of electronic adjustable fresh air valve inlet, to ensure that the clean of product requires.
Air exhausting device is linked in sequence group by the exhaust blower equipped with fire-proof motor, electronic adjustable exhaust valve and active carbon adsorption case
Into.Electronic adjustable exhaust valve is provided with YE, can automatically adjust valve opening and closing angle.Equipped with work in active carbon adsorption case
Property carbon screen pack, the filter material of active carbon filter net are：Activated carbon non-woven fabrics, industrial waste gas can be effectively adsorbed, such as：Benzene, toluene, two
The organic solvents such as toluene, sulfur dioxide.
The automatic control circuit system for forcing desorption apparatus includes：Main power switch K1, power supply indicator L1, heating
Insulation indicator lamp L2, air draft indicator lamp L3, start button SB2, stop button SB1, band delay disconnection normally closed interlock and delay are closed
Close the time relay KT1 of normally open contact, the time relay of normally closed interlock and timing closing normally open contact is disconnected with delay
KT2, the power cut off delay type time relay KT3 with wink moving contact, relay KM1, relay KM2, temperature controller XTM, probe Pt；
Main circuit part：Main power switch K1 connects with power supply indicator L1；Stop button SB1 and start button SB2 goes here and there
Connection, start button SB2 disconnect the time relay KT2 of normally closed interlock and timing closing normally open contact with relay KM1, with delay
Connected after parallel connection with disconnecting the time relay KT1 of normally closed interlock and timing closing normally open contact with delay；Band delay disconnects normal
Close contact and timing closing normally open contact time relay KT1 it is in parallel with relay KM2 after be delayed with band and disconnect normally closed interlock
Connected with the time relay KT2 of timing closing normally open contact；Relay KM1 connects with heating and thermal insulation indicator lamp L2；Relay
KM2 connects with air draft indicator lamp L3；Relay KM2 is electrically connected with electronic adjustable exhaust valve；Power cut off delay with wink moving contact
It is electrically connected again with electronic adjustable new air-valve after type time relay KT3 is in parallel with relay KM2；
Control circuit part：After K1 points of three tunnels of main power switch are connected with relay KM1, two groups are separated into, one group with sending
Blower fan is electrically connected, and another group is electrically connected with solid-state relay SSR, fuse FU, heating oil heater order；Main power switch K1
The tunnels of Ling Fen tri- are electrically connected with relay KM2, exhaust blower order；
Temperature controller XTM circuit parts：The tunnels of temperature controller XTM mono- are connected with main power switch K1, and another way connects one and is placed in
Probe Pt between desorption, also two-way are electrically connected with solid-state relay SSR.
A kind of EO sterilising prods carried out using above-mentioned pressure desorption apparatus force desorption method as follows：By EO to be desorbed
Sterilising prods, which are put into, to be forced in desorption apparatus, and desorption apparatus is warming up to setting operating temperature, and EO sterilising prods are placed in into a constant temperature
Section insulation desorption is spent, realizes that EO volatilizees in product；Then the interior air of desorption is evacuated by air exhausting device, will contained
The gas of EO residuals is drawn to adsorbent equipment；After pumpdown time reaches setting value, then by entering aeration device while pumping
Tonifying Qi is carried out to desorption apparatus, that is, is evacuated while cover fresh air, is thus taken a breath；When rate of ventilation reaches setting
After value, then restart to heat up, be incubated desorption, pumping ventilation；So repeatedly, until the residual EO in product is fully separated out (such as
Shown in Fig. 7).The process can be realized automatically by desorption room completely.User is directed to different products, sets desorption parameter.
Beneficial effects of the present invention：
The EO sterilising prods of the present invention force desorption apparatus, product E O residual solutions can be drawn into standard limit in a short time
Degree, the residual EO in product is effectively removed, improve the security that product uses, realize effective control of risk, it is ensured that production of letting pass
Product meet standard regulation.
Brief description of the drawings
Fig. 1 is the structural representation that a kind of EO sterilising prods of the present invention force desorption apparatus；
Fig. 2 is the structural representation for entering aeration device in the present invention；
Fig. 3 is the structural representation of air exhausting device in the present invention；
Fig. 4 is the circuit diagram of main circuit part in the present invention；
Fig. 5 is the circuit diagram of control circuit part in the present invention；
Fig. 6 is the circuit diagram of XTM temperature controllers circuit part in the present invention；
Fig. 7 is the working curve diagram of the pressure desorption apparatus of the present invention.
In figure：1st, enter aeration device 2, heating air-supply between 3, pressure fan 4, return air diversion window 5, desorption between 6, unpack
Between 7, air draft diversion window 8,9, air exhausting device 10. heats oil heater 11, electronic adjustable new air-valve 12, board-like thick effect between air draft
Filter 13, YE 91, exhaust blower 92, electronic adjustable exhaust valve 93, active carbon adsorption case 94, electronic execution
Device 95, fire-proof motor
Embodiment
Below in conjunction with drawings and examples, the present invention is further illustrated.
Embodiment 1
As shown in figure 1, a kind of EO sterilising prods of the present invention force desorption apparatus, it includes between heating air-supply 5 between 2, desorption,
8 between air draft, unpack between 6；5 between unpacking with 6 being connected between desorption, and is provided with inlet/outlet between the two；Between heating air-supply between 2 and desorption
5 are connected, and pressure fan 3 and return air diversion window 4 are provided with the partition wall between heating air-supply 5 between 2 and desorption, wherein, one flows back to
Wind diversion window 4 is located at the top of partition wall, and three pressure fan 3 are located at the middle and lower part of partition wall；Between desorption 8 between 5 and air draft between
Partition wall is provided with air exhausting device 9 and air draft diversion window 7, wherein, air exhausting device 9 is located at the top of partition wall, several rows of wind diversion window 7
It is located at the middle and lower part of partition wall；Three heating oil heaters 10 are provided with 2 between heating is blown；It is provided between heating is blown on 2 exterior wall
Enter aeration device 1.
As shown in Fig. 2 enter aeration device 1 forms (i.e. fresh air by electronic adjustable new air-valve 11 and board-like low efficient filter 12
Device band is electronic adjustable to cover fresh air and fresh air filtering function), board-like low efficient filter and the entrance of electronic adjustable new air-valve 11
Connection, electronic adjustable new air-valve 11 are provided with YE 13, can automatically adjust valve opening and closing angle.Board-like low efficient filter
More than 5 μm of dust can effectively be filtered.
As shown in figure 3, air exhausting device 9 is by the exhaust blower 91 equipped with fire-proof motor 95, electronic adjustable exhaust valve 92 and activity
Carbon adsorption case 93 is linked in sequence composition (i.e. air exhausting device band charcoal absorption function).Electronic adjustable exhaust valve 92 is provided with electronic
Actuator 94, valve opening and closing angle can be automatically adjusted.Active carbon filter net, active carbon filter net are housed in active carbon adsorption case 93
Filter material be：Activated carbon non-woven fabrics, industrial waste gas can be effectively adsorbed, such as：Benzene,toluene,xylene, sulfur dioxide etc. are organic molten
Agent.
5 do enclosed structure, insulation, fire prevention using rock cotton board between desorption.Installation is simple, convenient and swift.
As Figure 4-Figure 6, the automatic control circuit system of pressure desorption apparatus of the invention includes：K1 main power switch,
L1 power supply indicators, L2 heating and thermal insulations indicator lamp, L3 air drafts indicator lamp, SB2 start buttons, SB1 stop buttons, KT1 band delays
Disconnect the time relay of normally closed interlock and timing closing normally open contact, KT2 band delays disconnect normally closed interlock and timing closing is normal
The power cut off delay type time relay of the time relay, KT3 with wink moving contact of open contact, KM1 relays, KM2 relays,
XTM temperature controllers, Pt probes；
As shown in figure 4, main circuit part：K1 connects with L1；SB1 connects with SB2, after SB2 is in parallel with KM1, KT2 with KT1
Series connection；KT1 connects with after KM2 parallel connections with KT2；KM1 connects with L2；KM2 connects with L3；KM2 and MD exhaust valves (electronic adjustable row
Air-valve) electrical connection；It is electrically connected again with MD new air-valves (electronic adjustable new air-valve) after KT3 is in parallel with KM2；
As shown in figure 5, control circuit part：After K1 points of three tunnels are connected with KM1, two groups are separated into, one group electromechanical with air-supply
Gas connects, and another group is electrically connected with three solid-state relays SSR1, SSR2, SSR3, three solid-state relay SSR1, SSR2,
SSR3 is electrically connected by fuse FU and three heating oil heaters respectively again；The tunnels of K1 Ling Fen tri- electrically connect with KM2, exhaust blower order
Connect.
As shown in fig. 6, XTM temperature controller circuit parts：The tunnels of XTM mono- are connected with K1, and another way connects one and is placed between desorption
Pt probes, also two-way and solid-state relay SSR be electrically connected.
Automatically control partial circuit operation principle and the course of work is as follows：
Close the energization of main power switch K1 main circuits
1.k1 is closed, the bright of L1 lamps
2. temperature controller XTM self-tests, self-test finishes can be by desorption technique requirement design temperature.Popped one's head in simultaneously by Pt and gather solution
Temperature between suction.
It is delayed by start button SB2 KT1 and disconnects normally closed interlock closure
1.KM1 relay adhesives, pressure fan work
Solid-state relay SSR is powered, and receives temperature controller XTM control instructions, controls oil heater heating work.
2.L2 burner on light is bright
The 3.KT1 time relays work, and realize warm-up time control.
The heating and thermal insulation time terminates, KT1 power-off
1.KT1 delay disconnects normally closed interlock and disconnected, and KMI power-off, oil heater stops heating.
2.KT1 timing closing normally open contact closure
3.KT2 delay disconnects normally closed interlock closure
1) .KM2 relays adhesive
1. .L3 air draft indicator lamps are bright
2. exhaust blowers work
3. the .KT3 time relays work, desorption chamber pumpdown time is controlled
Pumpdown time terminates, and KT3 wink moving contact closure, the work of MD new air-valves, is taken a breath.
2) the .KT2 time relays work, and realize forced-ventilated, the control of ventilation total time
Forced-ventilated, ventilation terminate, KT2 power-off, KT2 timing closing normally open contact closure
KM1 energization work, realizes said process automatic cycle.
Stop button SB1 is pressed, desorption room is stopped.
Above-mentioned EO sterilising prods force the Specifeca tion speeification of desorption apparatus (desorption room) as follows：
1) 50~60 DEG C of operating temperature (i.e. desorption temperature T), temperature-controlled precision are ± 5 DEG C.
2) electric thermal power 9kw.
3) time/hour of rate of ventilation 10~30, adjustable (can be according to the regulation of desorption room space size).Automatic running pattern.
4) circulate in the wind speed is pressure fan wind speed：3~5m/s
5) external power supply
Motor power：AC380V/50Hz/ controls power supply：AC220V/50Hz/
Temperature controller power supply：DC24V
6) blower fan:BT35-11 2.2kw totally 4 (+1 exhaust blower of 3 pressure fan)
Embodiment 2
Below by desorbing to verify the function of desorption apparatus described in embodiment 1 to EO sterilising prods.
The sterilization process process of our company's product is that the outer company of commission is carried out, using the method for " excessive " sterilizing, production
Product sterilizing validity has been verified by confirming.The inner packing of product adds the form of air-permeable paper sealing, product institute using plastic uptake bowl
Material is silicon rubber, and it has stronger adsorptivity to EO.Product has been carried out " vacuumizing " during sterilization process and changed
The desorption measure of gas, but still have EO residuals in interiors of products.Therefore it is called " EO sterilising prods ".Now using described in embodiment 1
Desorption apparatus carries out pressure desorption to above-mentioned EO sterilising prods.
Above-mentioned EO sterilising prods are carried out using desorption apparatus described in embodiment 1 to force the process of desorption as follows：
Take 2m3Above-mentioned EO sterilising prods, first it is placed between unpacking 6 and unpacks, then is placed between desorption 5 and carries out pressure desorption；Adding
Air between wind in 2 is heat-fed through three heating oil heater heat temperature raisings, the thermal cycle wind after heat temperature raising is by being located at heating air-supply
Between pressure fan 3 between 2 and desorption on 5 division wall be sent into 5 between desorption, then the return air diversion window 4 by being located on same partition wall
Realize hot air circulation；When 5 temperature are to proceed by insulation solution after desorption temperature (operating temperature) reaches 50 DEG C of setting value between desorption
Inhale；Soaking time reach setting value 40min after, open exhaust blower 91, electronic adjustable exhaust valve 92, by be located at desorption between 5 with row
Air exhausting device 9 and air draft diversion window 7 between wind on 8 division wall are evacuated to the space between desorption 5, will be contained EO and be remained
Gas be drawn to adsorbent equipment；Reach setting value 10min between when this occurs, then open electronic adjustable new air-valve 11 and (mend wind
Valve), tonifying Qi is carried out to desorption space by entering aeration device 1 and pressure fan 3, now, while being fresh air by entering fresh air
Device 1 (the board-like electronic adjustable new air-valves 11 of low efficient filter 12+) is covered 2 between heating air-supply, then is sent heating by pressure fan 3
2 fresh air is sent into 5 between desorption between wind, and another side air exhausting device 9 is also ceaselessly being evacuated, and has thus been reached to desorbing space
The purpose taken a breath.After when rate of ventilation is up to setting value 30 times/small, then restarts to heat up, be incubated desorption, be evacuated and change
Gas.So repeatedly, until EO residuals fully separate out (as shown in Figure 7) in product.The process is realized automatically by desorption apparatus completely.
Parameter setting：50 DEG C, soaking time 40min, pumpdown time 10min of desorption temperature, rate of ventilation about 30 times/small
When, automatic running pattern.
Comparative result
| Desorption mode | Small product size | Desorption temperature | Desorption time | EO residual quantities | Remarks | |
| Force desorption | 2m3 | 50±5℃ | 48h | ≤10μg/g | It is qualified | |
| Naturally desorb | 2m3 | Normal temperature | 48h | >10μg/g | It is unqualified |
Product through testing same volume is needing 2 time-of-weeks up to standard with the mode desorbed naturally.
Claims (10)
1. a kind of EO sterilising prods force desorption apparatus, it is characterised in that it includes between heating air-supply, between desorption, between air draft, tear open
Parlor；With being connected between unpacking between desorption, and inlet/outlet is provided between the two；It is connected between heating air-supply between desorption, is sent in heating
Between wind between desorption between partition wall be provided with pressure fan and return air diversion window, wherein, return air diversion window is located at the top of partition wall,
Pressure fan is located at the middle and lower part of partition wall；Between desorption between air draft between partition wall on be provided with air exhausting device and air draft diversion window,
Wherein, air exhausting device is located at the top of partition wall, and air draft diversion window is located at the middle and lower part of partition wall；The air exhausting device is by equipped with explosion-proof
The exhaust blower of motor, electronic adjustable exhaust valve and active carbon adsorption case are linked in sequence composition；More are provided with heating air-supply
Heat oil heater；It is provided with exterior wall between heating is blown into aeration device.
2. EO sterilising prods as claimed in claim 1 force desorption apparatus, it is characterised in that it is described enter aeration device by electronic
Adjustable new air-valve and leaf filter composition, leaf filter are connected with the entrance of electronic adjustable new air-valve, electronic adjustable fresh air
Valve is provided with YE.
3. EO sterilising prods as claimed in claim 2 force desorption apparatus, it is characterised in that electronic adjustable exhaust valve is provided with
YE；Active carbon filter net is housed, the filter material of active carbon filter net is in the active carbon adsorption case：Activated carbon nonwoven
Cloth.
4. EO sterilising prods as claimed in claim 2 force desorption apparatus, it is characterised in that do wall using rock cotton board between desorption
Plate.
5. EO sterilising prods as claimed in claim 3 force desorption apparatus, it is characterised in that heating oil heater has three, air-supply
Machine has three, and return air diversion window has a row, and air draft diversion window has a row.
6. EO sterilising prods as claimed in claim 3 force desorption apparatus, it is characterised in that it is described force desorption apparatus from
Dynamic control circuit system includes：Main power switch K1, power supply indicator L1, heating and thermal insulation indicator lamp L2, air draft indicator lamp L3, open
Dynamic button SB2, stop button SB1, time relay KT1, band with delay disconnection normally closed interlock and timing closing normally open contact
Delay disconnects time relay KT2, the power cut off delay type time with wink moving contact of normally closed interlock and timing closing normally open contact
Relay KT3, relay KM1, relay KM2, temperature controller XTM, probe Pt；
Main circuit part：Main power switch K1 connects with power supply indicator L1；Stop button SB1 connects with start button SB2, opens
The time relay KT2 that dynamic button SB2 disconnects normally closed interlock and timing closing normally open contact with relay KM1, with delay is in parallel
Connected afterwards with disconnecting the time relay KT1 of normally closed interlock and timing closing normally open contact with delay；Band delay disconnects normally closed touch
It is delayed after the time relay KT1 of head and timing closing normally open contact is in parallel with relay KM2 with band and disconnects normally closed interlock and prolong
When close normally open contact the time relay KT2 series connection；Relay KM1 connects with heating and thermal insulation indicator lamp L2；Relay KM2 with
Air draft indicator lamp L3 connects；Relay KM2 is electrically connected with electronic adjustable exhaust valve；The power cut off delay type time with wink moving contact
It is electrically connected again with electronic adjustable new air-valve after relay KT3 is in parallel with relay KM2；
Control circuit part：After K1 points of three tunnels of main power switch are connected with relay KM1, two groups, one group and pressure fan are separated into
Electrical connection, another group is electrically connected with solid-state relay SSR, fuse FU, heating oil heater order；Main power switch K1 separately divides
Three tunnels are electrically connected with relay KM2, exhaust blower order；
Temperature controller XTM circuit parts：The tunnels of temperature controller XTM mono- are connected with main power switch K1, and another way connects one and is placed in desorption
Between probe Pt, also two-way and solid-state relay SSR be electrically connected.
7. the EO sterilising prods that a kind of EO sterilising prods using as described in claim 1-6 is any force desorption apparatus to carry out are strong
Desorption method processed, it is characterised in that：EO sterilising prods to be desorbed are put into and forced in desorption apparatus, desorption apparatus, which is warming up to, to be set
Determine operating temperature, EO sterilising prods are placed in the insulation desorption of certain temperature section, realize that EO volatilizees in product；Then air draft is passed through
Device is evacuated the interior air of desorption, will be drawn to adsorbent equipment containing the gas that EO is remained；Pumpdown time reaches setting
After value, then tonifying Qi is carried out to desorption apparatus by entering aeration device while pumping, that is, be evacuated while covering fresh sky
Gas, thus taken a breath；After rate of ventilation reaches setting value, then restart to heat up, be incubated desorption, pumping ventilation；So
Repeatedly, until the residual EO in product is fully separated out.
8. EO sterilising prods as claimed in claim 7 force desorption method, it is characterised in that：Desorption apparatus operating temperature 50~
60 DEG C, temperature-controlled precision is ± 5 DEG C；Time/hour of rate of ventilation 10~30；Circulate in the wind speed is that pressure fan wind speed is：3~5m/s.
9. EO sterilising prods as claimed in claim 7 force desorption method, it is characterised in that：By EO sterilising prods, first it is placed in
Unpacked between unpacking, then be placed in desorption between carry out pressure desorption；Air in heating air-supply rises through three heating oil heater heating
Temperature, the thermal cycle wind after heat temperature raising are sent into desorption by the pressure fan being located on the division wall between heating air-supply between desorption
Between, then the return air diversion window by being located on same partition wall realizes hot air circulation；When temperature is that desorption temperature reaches and set between desorption
Insulation desorption is proceeded by after definite value；After soaking time reaches setting value, exhaust blower, electronic adjustable exhaust valve are opened, by being located at
Air exhausting device on division wall and air draft diversion window between desorption between air draft are evacuated to the space in desorption, will be contained
The gas of EO residuals is drawn to adsorbent equipment；Setting value is reached between when this occurs, then opens electronic adjustable new air-valve, by entering fresh air
Device and pressure fan carry out tonifying Qi to desorption space, now, while being that fresh air covers heating air-supply by entering aeration device
Between, then by pressure fan will heat air-supply between fresh air be sent into desorption between, another side air exhausting device is also ceaselessly being evacuated,
Thus reach and desorption space is taken a breath；After rate of ventilation reaches setting value, then restart to heat up, be incubated desorption, pumping
Ventilation；So repeatedly, until EO residuals fully separate out in product.
10. EO sterilising prods as claimed in claim 9 force desorption method, it is characterised in that：Operating parameter setting value is：Solution
Inhale temperature 50 C, soaking time 40min, pumpdown time 10min, time/hour of rate of ventilation 30, automatic running.
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|---|---|---|---|---|
| US8049044B2 (en) * | 2002-12-23 | 2011-11-01 | Shell Oil Company | Remediation process and apparatus |
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|---|---|---|---|---|
| CN202740444U (en) * | 2012-07-19 | 2013-02-20 | 武健 | Integrated ethylene oxide preheating, sterilizing and resolving cabinet |
| CN203252946U (en) * | 2013-04-02 | 2013-10-30 | 嘉兴市正兴能源科技有限公司 | Preheating, sterilization and analysis system of medical instrument |
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