CN111790246A - Waste gas recycling treatment device of ethylene oxide sterilization cabinet - Google Patents
Waste gas recycling treatment device of ethylene oxide sterilization cabinet Download PDFInfo
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- CN111790246A CN111790246A CN201910274255.XA CN201910274255A CN111790246A CN 111790246 A CN111790246 A CN 111790246A CN 201910274255 A CN201910274255 A CN 201910274255A CN 111790246 A CN111790246 A CN 111790246A
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- Prior art keywords
- ethylene oxide
- water
- soluble
- waste gas
- aqueous solution
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- 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
- B01D53/1425—Regeneration of liquid absorbents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/20—Gaseous substances, e.g. vapours
- A61L2/206—Ethylene oxide
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/26—Accessories or devices or components used for biocidal treatment
-
- 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
- B01D53/1418—Recovery of products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/13—Biocide decomposition means, e.g. catalysts, sorbents
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- 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
Abstract
The invention relates to a sterilizing agent waste gas treatment device of an ethylene oxide sterilizing cabinet, in particular to a waste gas treatment device capable of recycling an ethylene oxide sterilizing agent. The technical scheme adopted by the invention for solving the technical problems is as follows: firstly, an ethylene oxide water-soluble device is established, and the ethylene oxide water-soluble device is formed by a plurality of water-soluble towers which are connected in series, and a water mist spray head is arranged on each water-soluble tower. After the sterilization of the sterilization cabinet is finished, the discharged sterilization waste gas is dissolved by water repeatedly for many times, so that the ethylene oxide sterilizing agent in the waste gas is dissolved in the water to form ethylene oxide water solution. When the sterilizing cabinet performs sterilization again, the ethylene oxide aqueous solution constant-temperature heating device starts to heat the ethylene oxide aqueous solution to a constant temperature of about 60 ℃, at the moment, the ethylene oxide gas in the ethylene oxide aqueous solution is continuously separated out, and thus, the ethylene oxide gas separated out from the ethylene oxide aqueous solution is continuously fed into the sterilizing cabinet to be used as an ethylene oxide sterilizing agent for recycling.
Description
Technical Field
The invention relates to a sterilizing agent waste gas treatment device of an ethylene oxide sterilizing cabinet, in particular to a waste gas treatment device capable of recycling an ethylene oxide sterilizing agent, which solves the problem that the ethylene oxide waste gas is discharged to pollute the environment and enables the ethylene oxide sterilizing agent to be recycled, thereby saving energy, reducing emission, saving resources and reducing cost.
Background
Ethylene oxide is a broad-spectrum sterilizing agent which can kill various microorganisms in an ethylene oxide sterilizing cabinet and can penetrate through the package of medical instruments, so that the ethylene oxide sterilizing agent is widely used for sterilizing medical instruments and the like. The molecular formula of the ethylene oxide is C2H4O, the boiling point is 10.8 ℃, the ethylene oxide is easy to dissolve in water, meanwhile, the ethylene oxide can volatilize from the water when the water solution is heated, the ethylene oxide is best volatilized from the water solution when the water solution is generally heated to about 60 ℃, and a gas chromatograph is used for detecting the residual quantity of the ethylene oxide of the sterilized product by utilizing the characteristic of the ethylene oxide. The sterilized ethylene oxide waste gas is a hazardous chemical which is toxic, flammable and explosive, and therefore, must be discharged after being treated. At present, the ethylene oxide waste gas treatment mode is that the ethylene oxide waste gas is dissolved in water and then is hydrolyzed and discharged except for direct discharge, and a treatment device for recycling the ethylene oxide waste gas as a sterilizing agent does not exist.
SUMMARY OF THE PATENT FOR INVENTION
In order to solve the problems of treatment of the ethylene oxide waste gas and cyclic utilization of the ethylene oxide sterilizing agent after the ethylene oxide sterilizing cabinet is sterilized, the invention provides the device capable of cyclic utilization of the ethylene oxide sterilizing agent of the ethylene oxide sterilizing cabinet, which not only solves the problem that the ethylene oxide waste gas is discharged to pollute the environment, but also enables the ethylene oxide sterilizing agent to be cyclic utilized, and not only is energy-saving and environment-friendly, but also saves resources and reduces the cost.
The technical scheme adopted by the invention for solving the technical problems is as follows: firstly, an ethylene oxide water-soluble device is established, the ethylene oxide water-soluble device is composed of a plurality of water-soluble towers which are connected in series, a water mist spray head is arranged on each water-soluble tower, and the water mist spray heads are made of PVC or PPR materials, so that the cost is reduced, and the water mist spray heads are not rusted. After the sterilization of the ethylene oxide sterilization cabinet is finished, the ethylene oxide waste gas is discharged into the ethylene oxide water-soluble device, the discharged ethylene oxide waste gas sequentially passes through the hydrolysis towers which are connected in series, water mist sprayed by a spray head of each water-soluble tower carries out primary water solvent on the ethylene oxide sterilization waste gas flowing through the water-soluble tower, the ethylene oxide sterilizing agent in the waste gas is dissolved into water to form ethylene oxide water solution after repeated water dissolution, the ethylene oxide water solution is stored into a sealed water tank, and the residual air is discharged through an exhaust pipe behind the water-soluble tower. Then, an ethylene oxide gas separation recycling device is established, and the recycling device consists of an ethylene oxide aqueous solution constant-temperature heating device, a sterilization cabinet connecting pipeline control valve and other auxiliary equipment, wherein the auxiliary equipment comprises a vacuum pumping system, a dosing (drug supplementing) system, an ethylene oxide sterilizing agent concentration detection system and the like. When the sterilization cabinet carries out sterilization again, the sterilization cabinet is evacuated to reach the vacuum degree of about minus 50KPa while being preheated, then, opening a valve between the sterilizing cabinets and the valve, simultaneously starting heating by an ethylene oxide aqueous solution constant-temperature heating device, heating the ethylene oxide aqueous solution to a constant temperature of about 60 ℃, and then continuously separating out ethylene oxide gas in the ethylene oxide aqueous solution, because the communicated sterilizing cabinet is in a negative pressure state, the ethylene oxide gas separated out from the ethylene oxide water solution continuously enters the sterilizing cabinet to be used as an ethylene oxide sterilizing agent for recycling, the preheating time of the general sterilizing cabinet is 2-4 hours to ensure that the sterilized objects can reach the sterilizing temperature of about 54 ℃, the separating and recycling time of the ethylene oxide gas is synchronous with the preheating time, therefore, sufficient time is allowed for the ethylene oxide gas in the ethylene oxide aqueous solution to be precipitated out as much as possible for recycling. When the preheating is finished, the ethylene oxide precipitation work is also finished, at the moment, the concentration of the ethylene oxide sterilizing agent in the sterilizing cabinet is detected, the concentration of the ethylene oxide sterilizing agent generally reaches 700-800 g/L, and if the concentration is detected to be insufficient, the medicine is supplemented through a medicine administration (medicine supplementing) system, so that the normal sterilizing concentration is reached, and the sterilizing quality is ensured.
The invention has the advantages that the problem of ethylene oxide waste gas treatment after the ethylene oxide sterilizing cabinet is sterilized can be effectively solved, and the ethylene oxide medicament used by the sterilizing cabinet is recycled on the premise of ensuring the sterilizing (disinfecting) quality of the ethylene oxide sterilizing cabinet, so that the cost is saved, the energy is saved, the emission is reduced, and the environment is protected.
The invention is further described with reference to the following figures and examples.
The attached figure is a system structure schematic diagram of the technical invention patent.
In the figure, K1, K2, K3, K4, K5 and K6 are respectively automatic control pneumatic switch valves, and the switch states of the automatic control pneumatic switch valves are controlled by a program; 1-16 are ethylene oxide sterilization waste gas water-soluble tower groups connected in series; 17 is an exhaust duct; 18 is an ethylene oxide sterilizing cabinet; 19 is a storage tank for ethylene oxide aqueous solution; 20 is an ethylene oxide medicament canister; 21 is an ethylene oxide sterilant concentration detector; 22 is a constant temperature heating device for ethylene oxide water solution; 23 is a recycle pipeline for separating out ethylene oxide gas; 24 is a spray water pipeline; 25 is a waste gas discharge pipeline of the sterilization cabinet; 26 is an ethylene oxide aqueous solution recovery tube; and 27 is an ethylene oxide sterilant vaporizing device.
In the specific implementation process, the method comprises the following steps of,
after the sterilization of the 18 sterilization cabinet is finished, the discharged waste gas enters a 1-16 series ethylene oxide sterilization waste gas water-soluble tower group through a 25 sterilization cabinet waste gas discharge pipeline in sequence, at the moment, a K5 valve is opened, a spray nozzle on the water-soluble tower starts to spray water mist, the water mist sprayed by the spray nozzle of each water-soluble tower carries out primary water solvent on the ethylene oxide sterilization waste gas flowing through the water-soluble tower, the ethylene oxide sterilizing agent in the waste gas is dissolved into water to form ethylene oxide aqueous solution through repeated water dissolution, meanwhile, a K1 valve is opened to store the aqueous solution into a sealed 19 ethylene oxide aqueous solution storage tank through a 26 ethylene oxide aqueous solution recovery pipe, air in the waste gas is discharged from a 17 exhaust pipeline, and the ethylene oxide water dissolution process of the sterilization waste gas treatment of the sterilization cabinet is finished. When the 18 sterilization cabinet is used for sterilization again, the 18 sterilization cabinet is evacuated to a vacuum degree of about-50 KPa while being preheated, then a K6 valve between the sterilization cabinet and the sterilization cabinet is opened, simultaneously, a 22 ethylene oxide aqueous solution constant-temperature heating device starts to heat, an ethylene oxide aqueous solution in a 19 ethylene oxide aqueous solution storage tank is heated to a constant temperature of about 60 ℃, at the moment, ethylene oxide gas in the ethylene oxide aqueous solution is continuously separated out, the communicated sterilization cabinet is in a negative pressure state, so that the ethylene oxide gas separated out from the ethylene oxide aqueous solution is continuously fed into the sterilization cabinet to be used as an ethylene oxide sterilizing agent for recycling, generally, the preheating time of the sterilization cabinet is 2-4 hours to sterilize articles to reach a sterilization temperature of about 54 ℃, and the separation recycling time of the ethylene oxide gas is synchronous with the above time, therefore, sufficient time is available for the ethylene oxide gas in the ethylene oxide aqueous solution to be precipitated as much as possible for recycling. When the preheating is finished, the ethylene oxide precipitation work is also finished, at the moment, the concentration of the ethylene oxide sterilizing agent in the sterilizing cabinet is detected by a 21 ethylene oxide sterilizing agent concentration detector, the concentration of the ethylene oxide sterilizing agent generally reaches 700-800 g/L, if the concentration is detected to be insufficient, the ethylene oxide medicament tank is opened 20, the ethylene oxide sterilizing agent vaporizing device 27 is used for supplementing medicaments to the sterilizing cabinet, so that the normal sterilizing concentration is achieved, and the sterilizing quality is ensured.
Claims (3)
1. The waste gas recycling treatment device of the ethylene oxide sterilizing cabinet is characterized in that firstly, an ethylene oxide water-soluble device is established, and the ethylene oxide water-soluble device is composed of a plurality of water-soluble towers which are connected in series; then, an ethylene oxide gas separation recycling device is established, and the recycling device consists of an ethylene oxide water solution constant-temperature heating device, a sterilization cabinet connecting pipeline control valve and other auxiliary equipment.
2. The waste gas recycling treatment device of the ethylene oxide sterilizing cabinet is characterized in that an ethylene oxide water-soluble device is composed of a plurality of water-soluble towers connected in series, a water mist spray head is arranged on each water-soluble tower, and the water-soluble towers are made of PVC or PPR materials, so that the cost is reduced, and the water-soluble towers are not rusted.
3. The waste gas recycling treatment device of the ethylene oxide sterilizing cabinet is characterized in that the recycling device consists of an ethylene oxide aqueous solution constant-temperature heating device, a sterilizing cabinet connecting pipeline control valve and other auxiliary equipment, and when the sterilizing cabinet carries out sterilization again, the ethylene oxide aqueous solution constant-temperature heating device starts to heat while preheating, so that the ethylene oxide aqueous solution is heated to a constant temperature of about 60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910274255.XA CN111790246A (en) | 2019-04-08 | 2019-04-08 | Waste gas recycling treatment device of ethylene oxide sterilization cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910274255.XA CN111790246A (en) | 2019-04-08 | 2019-04-08 | Waste gas recycling treatment device of ethylene oxide sterilization cabinet |
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| Publication Number | Publication Date |
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| CN111790246A true CN111790246A (en) | 2020-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910274255.XA Pending CN111790246A (en) | 2019-04-08 | 2019-04-08 | Waste gas recycling treatment device of ethylene oxide sterilization cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115646144A (en) * | 2022-11-04 | 2023-01-31 | 常熟荣瑞灭菌技术有限公司 | Waste gas recycling processing apparatus of ethylene oxide sterilizer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3989461A (en) * | 1975-03-03 | 1976-11-02 | Vacudynealtair, Inc. | Apparatus for use, recovery, reconstitution, and recyclization of sterilant gas mixture |
| JPS62103072A (en) * | 1985-07-10 | 1987-05-13 | Nippon Shokubai Kagaku Kogyo Co Ltd | Method of purifying ethylene oxide |
| CN1034540A (en) * | 1987-12-22 | 1989-08-09 | 阿托化学公司 | The method of separating aldehyde impurity and oxyethane |
| US4954315A (en) * | 1988-02-03 | 1990-09-04 | Mg Industries | Method for recovery of sterilizing gas |
| US7569710B1 (en) * | 2008-02-23 | 2009-08-04 | Brian Ozero | Ethylene oxide recovery process |
| CN101721725A (en) * | 2008-10-13 | 2010-06-09 | 张学斌 | Medicament cyclic utilization system of ethylene oxide sterilizing equipment |
| JP2010179061A (en) * | 2009-02-09 | 2010-08-19 | Inter Noba Kk | Ethylene oxide gas sterilizing and collecting system |
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2019
- 2019-04-08 CN CN201910274255.XA patent/CN111790246A/en active Pending
Patent Citations (8)
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|---|---|---|---|---|
| US3989461A (en) * | 1975-03-03 | 1976-11-02 | Vacudynealtair, Inc. | Apparatus for use, recovery, reconstitution, and recyclization of sterilant gas mixture |
| JPS62103072A (en) * | 1985-07-10 | 1987-05-13 | Nippon Shokubai Kagaku Kogyo Co Ltd | Method of purifying ethylene oxide |
| CN1034540A (en) * | 1987-12-22 | 1989-08-09 | 阿托化学公司 | The method of separating aldehyde impurity and oxyethane |
| US4954315A (en) * | 1988-02-03 | 1990-09-04 | Mg Industries | Method for recovery of sterilizing gas |
| US7569710B1 (en) * | 2008-02-23 | 2009-08-04 | Brian Ozero | Ethylene oxide recovery process |
| CN101952268A (en) * | 2008-02-23 | 2011-01-19 | 布莱恩·奥泽罗 | Improved ethylene oxide recovery process |
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| JP2010179061A (en) * | 2009-02-09 | 2010-08-19 | Inter Noba Kk | Ethylene oxide gas sterilizing and collecting system |
Non-Patent Citations (2)
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| 乔雪峰: "《医疗机构口腔诊疗器械消毒技术操作规范宣贯手册》", 31 March 2005, 中华医学出版社 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115646144A (en) * | 2022-11-04 | 2023-01-31 | 常熟荣瑞灭菌技术有限公司 | Waste gas recycling processing apparatus of ethylene oxide sterilizer |
| CN115646144B (en) * | 2022-11-04 | 2024-04-02 | 常熟荣瑞灭菌技术有限公司 | Waste gas recycling treatment device of ethylene oxide sterilizing cabinet |
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Application publication date: 20201020 |
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