JP6579689B2 - Highly stable hydrogen peroxide solution - Google Patents

Description

  The present invention provides a stable hydrogen peroxide solution supply apparatus that stably supplies hydrogen peroxide solution having a relatively high concentration of 10 to 35% by mass to a disinfectant gasifier or the like at a minute amount of 5 to 40 ml / min. About.

  Conventionally, when filling liquid foods such as milk and soft drinks into plastic containers such as paper containers and PET bottles, the containers before filling are sterilized with hydrogen peroxide for the purpose of extending the shelf life of the products. Yes. As a method of sterilizing the container, a method of immersing the container in a hydrogen peroxide solution tank and a method of spraying gaseous or liquid hydrogen peroxide on the container are known. When gasifying hydrogen peroxide to sterilize or sterilize packaging materials such as containers, fine particles of hydrogen peroxide are sprayed into the disinfectant gasifier using a nozzle, and the container is sterilized with hydrogen peroxide gas. (For example, see Patent Document 1).

  The method of spraying the bactericide and bringing it into contact with the heating element has good gasification efficiency, but clogging may occur in the spray nozzle due to the deposition of foreign substances or stabilizers contained in the bactericide. In order to avoid these problems, the present inventors have developed a vertical hot air pipe having an inlet at the upper end and an outlet at the lower end, a hot air generator for supplying hot air at a temperature capable of gasifying the sterilizing liquid, and hot air. A spray nozzle for spraying the sterilizing liquid in the pipe and a plate heater disposed below the nozzle so as to be opposed to the outlet, and a sealed gasification tank surrounds the lower part including the outlet of the hot air pipe and the plate heater. A sterilizing liquid gasifier (for example, see Patent Document 1) having a gas discharge port formed in the upper part of the gasification tank, a hot air pipe having a hot air inlet at one end and a hot air outlet at the other end, and a hot air inlet A hot air source that supplies hot air at a temperature that can gasify the sterilizing liquid, and a spray nozzle that sprays the sterilizing liquid in a direction opposite to the flow of the hot air discharged from the hot air outlet and collides the sprayed micronized sterilizing liquid with the hot air. When, At least the hot air outlet of the hot air tube and a gasification tank that surrounds the spray portion at the tip of the spray nozzle, and the side opposite to the spray portion at the tip of the spray nozzle across the hot air outlet in the gasification tank Has proposed a sterilizing liquid gasifier (see Patent Document 2, for example).

  As a technique for supplying hydrogen peroxide solution from the storage tank to the sterilizing liquid gasifier, a sterilizing liquid supply device (for example, a high-accuracy hydrogen peroxide solution can be supplied to the evaporator by preventing generation of bubbles) , See Patent Document 3), an apparatus (for example, see Patent Document 4) equipped with a cooling means that realizes stable liquid-feeding of hydrogen peroxide, which is an effervescent liquid, and a container such as a reservoir to a vaporization system. And a method using an accumulator that dispenses a liquid sterilizing agent in an accurate and reproducible measurement amount is known (see, for example, Patent Document 5).

JP 2007-20744 A WO2012 / 077307 JP 2005-103006 A JP 2000-289716 A Japanese National Patent Publication No. 8-504612

  An object of the present invention is an apparatus that supplies a relatively high concentration of hydrogen peroxide water to a disinfectant gasification apparatus in a very small amount, which is likely to occur when the flow rate is small, due to bubbles (oxygen gas) in the liquid supply pipe. It is an object of the present invention to provide a stable hydrogen peroxide supply device that minimizes fluctuations in flow rate and measurement errors.

  The present inventor has intensively studied to solve the above-mentioned problems, and the unstable phenomenon at the time of feeding hydrogen peroxide solution is mainly caused by oxygen gas flowing into or generated in the feeding pipe, and this oxygen gas causes Variations in the supply amount such as the breathing of the injection nozzle and erroneous measurement of the flow meter are induced, and this tendency is caused by the smaller supply amount of hydrogen peroxide solution, the higher the liquid temperature and room temperature, and the liquid supply pressure. We found that the lower the value, the more prominent. Therefore, in a device for supplying a relatively high concentration hydrogen peroxide solution of 10 to 35% by mass to the disinfectant gasifier with a flow rate of 5 to 40 ml / min, it was discharged downstream of the liquid feed pump. An air chamber part that suppresses the pulsation of hydrogen peroxide solution is placed, and a degassing module that removes the gas in the hydrogen peroxide solution is placed downstream of the air chamber part. In order to reduce the change in the cross-sectional area of the pipe that occurs in the pipe connection section, which is sprayed into the device, and in order to reduce the change in the pipe cross-sectional area, it is likely to occur when the flow rate is very small. It was confirmed that fluctuations in flow rate and measurement errors due to air bubbles (oxygen gas) can be minimized. As a result of providing a stable supply of hydrogen peroxide water by providing a degassing module, if the flow rate can be set to the required flow rate once, the flow meter is no longer necessary in steady operation, and However, it was found that there is no need for a pressurization mechanism that pressurizes the flow path to suppress foaming of the hydrogen peroxide solution. However, a flow meter or pressurization mechanism may be provided with an emphasis on safety. I confirmed that I can do it. The present invention has been completed based on these findings.

That is, the present invention is as follows.
(1) a tank for storing hydrogen peroxide water;
A liquid feed pump which is disposed downstream of the tank and sucks the hydrogen peroxide solution in the tank;
An air chamber portion disposed on the downstream side of the liquid feed pump and suppressing pulsation of discharged hydrogen peroxide solution;
A degassing module disposed downstream of the air chamber section for removing gas in the hydrogen peroxide solution;
A nozzle unit disposed on the downstream side of the deaeration module and spraying hydrogen peroxide water;
A liquid supply pipe for introducing hydrogen peroxide from the tank to the nozzle;
An apparatus for stably supplying hydrogen peroxide water, comprising:
(2) The stable supply device according to (1) above, wherein the liquid feed pump is a plunger pump.
(3) The stable supply device according to (1) or (2), wherein the air chamber is an air chamber accumulator with a membrane.
(4) The stable supply device according to any one of (1) to (3) above, wherein the deaeration module has an assembly binding portion in which a large number of hollow fiber membranes are bound fixed therein.
(5) The stable supply device according to (4), wherein the deaeration module is disposed so that the inlet of the hydrogen peroxide solution is positioned higher than the outlet of the hydrogen peroxide solution. .
(6) The stable supply device according to any one of (1) to (5) above, wherein a flow meter is disposed downstream of the deaeration module and upstream of the nozzle portion.
(7) The stable supply device according to (6) above, wherein the flow meter is a Coriolis mass flow meter.
(8) The stable supply device according to any one of (1) to (7), wherein the nozzle portion is a nozzle portion that sprays and supplies hydrogen peroxide solution into the sterilizing agent gasifier.
(9) The stable supply device according to any one of (1) to (8), wherein the nozzle portion has a pressurizing mechanism.
(10) The stable supply device according to (9), wherein the pressurizing mechanism is configured as a pressurizing pin with a bypass.
(11) The stable supply device according to any one of (1) to (10) above, wherein a core is used to reduce a change in the pipe cross-sectional area generated in the pipe connection portion.
(12) The stable supply device according to any one of (1) to (11), wherein the tank is a tank with a cooling function.
(13) Using the stable supply apparatus according to any one of (1) to (12) above, 10 to 35% by mass of hydrogen peroxide water at a flow rate of 5 to 40 ml / min in a bactericide gasifier or in a container A method for stably supplying a very small amount of high-concentration hydrogen peroxide solution characterized by spraying and supplying to a container.
(14) Using the stable supply device according to any one of (1) to (12) above, 2 to 45 mass% hydrogen peroxide water at a flow rate of 5 to 50 ml / min in a disinfectant gasifier or in a container A method for stably supplying hydrogen peroxide water, characterized by spraying and supplying to a container.

  Bubbles in the liquid supply pipe that are likely to be generated when the flow rate is very small in a device that supplies a relatively high concentration hydrogen peroxide solution of 10 to 35% by mass to the disinfectant gasifier at a very small flow rate of 5 to 40 ml / min. Variations in flow rate due to (oxygen gas) and measurement errors can be minimized.

1 is a system diagram of a minute amount stable supply device (hereinafter sometimes referred to as “superwater supply device”) and a disinfectant gasification device according to the present invention. It is a partial cross section figure of the pump connection part in the overwater supply apparatus of this invention. It is sectional drawing of the air chamber part in the overwater supply apparatus of this invention. It is sectional drawing of the deaeration module in the overwater supply apparatus of this invention. It is an expanded sectional view of the deaeration module shown in FIG. It is a partial cross section figure of the flowmeter connection part in the overwater supply device of the present invention. It is an expanded sectional view of the flowmeter connection part shown in FIG. It is sectional drawing of the nozzle part in the overwater supply apparatus of this invention. It is a figure which shows the result of the output response of the flowmeter in use of a deaeration module.

  The stable supply device for hydrogen peroxide solution of the present invention suitable for the stable supply of a very small amount of high-concentration hydrogen peroxide solution includes a tank for storing hydrogen peroxide solution; and a downstream side of the tank, A liquid feed pump for sucking the hydrogen peroxide solution; an air chamber portion disposed on the downstream side of the liquid feed pump and suppressing pulsation of the discharged hydrogen peroxide solution; and disposed on the downstream side of the air chamber portion. A deaeration module that removes gas in the hydrogen peroxide solution; a nozzle unit that is disposed downstream of the deaeration module and sprays the hydrogen peroxide solution; and guides the hydrogen peroxide solution from the tank to the nozzle unit In particular, when the stable supply device of the present invention is used, for example, 2 to 45% by mass of hydrogen peroxide, preferably 10 to 35% by mass. Flowing high-concentration hydrogen peroxide 5～50Ml / min, preferably in small amounts as 5～40Ml / min, and supplies to the sterilant gas-generating device, can be sprayed directly into the container.

  The tank for storing the hydrogen peroxide solution is not particularly limited as long as the hydrogen peroxide solution can be stored, and may be a large tank that can store a large amount of the hydrogen peroxide solution. Further, it may be a small or medium tank of a type in which hydrogen peroxide solution is added continuously or intermittently provided with a hydrogen peroxide solution amount detection means or the like.

  Examples of the liquid feed pump include plunger pumps, tube pumps, diaphragm pumps and the like that are provided in the liquid feed pipe, and flow rate adjustable pumps, among these pumps. Can be smoothly delivered, is not easily affected by air bubbles, and has excellent quantitative properties, which is particularly preferable. In this way, the plunger pump stabilizes the discharge amount regardless of disturbance (temperature, back pressure) and obtains a high discharge pressure. Therefore, the amount of liquid delivered can be adjusted by controlling the plunger rotation speed. High reproducibility can be achieved.

  The air chamber section is not particularly limited as long as it has a means capable of absorbing pressure fluctuation (pulsation) in the liquid feeding pipe by the liquid feeding pump, and an air chamber utilizing the elasticity of air, An accumulator that utilizes the stretchability of the gas body through the diaphragm can be exemplified, and an air chamber type accumulator with a membrane described later is particularly preferable. The drawback of the air chamber type is that it is a structurally large retention portion (air pocket) itself, and the gas phase in the chamber expands with time, that is, the liquid level of the chamber decreases. If this is left untreated, the chamber becomes a large gas lump supply source to the pipe line, the amount of liquid fed is greatly disturbed, and the flow meter may be distorted. As a countermeasure, an air chamber type accumulator with a membrane was used, in which a hydrophobic membrane was attached to the lower side of the cylindrical air chamber and a vacuum was drawn through the membrane. As a result, it was confirmed that the liquid level did not drop below the membrane position and functioned as an infinite-capacity air catcher for liquids that easily generate decomposition gas. The amount of pulsation was also compatible with the deaeration module described later, and was within the level of pulsation beyond expectations.

  The deaeration module is not particularly limited as long as it is a module that can deaerate (physically remove) bubbles (oxygen gas) flowing into or generated in the liquid supply pipe, but is an assembly in which a large number of hollow fiber membranes are bound. A deaeration module in which the bundling portion is fixed inside is preferable, and this type of deaeration module having a collective bundling portion of hollow fiber membranes prevents liquid from flowing in bubbles at the module inlet. It is preferable that the degassing module is arranged so that the flow of the hydrogen peroxide solution flows from the top to the bottom at the module inlet. The deaeration efficiency is improved by disposing the hydrogen peroxide solution at a position higher than the outlet of the hydrogen peroxide solution. In addition, the hollow fiber membrane is preferably made of a material that is not affected by contact with the hydrogen peroxide solution and does not destabilize the hydrogen peroxide solution, for example, silicon rubber. The entire deaeration module is preferably made of a material suitable for contact with hydrogen peroxide, such as a metal such as aluminum or stainless steel (SUS304, SUS316) or a fluororesin.

  It was also found that by providing the hollow fiber membrane type deaeration module, there is a liquid feeding stabilizing effect comparable to cooling of hydrogen peroxide solution. In other words, on the premise of sufficient degassing performance, the amount of dissolved oxygen in the hollow fiber membrane tube is reduced at the outlet of the degassing module, and even if the decomposition of hydrogen peroxide solution proceeds in the same way upstream, the oxygen concentration reaches the saturation value. If the flow rate is measured and discharged before it reaches, the liquid is apparently stable.

  It was found that by providing the hollow fiber membrane type deaeration module, stable liquid feeding is possible even at low pressure. If the liquid supply pressure is low, not only will the risk of accidents such as tube (liquid supply piping) disconnection be reduced, but the performance will also have the advantage of less breathing during spraying and milder. In other words, the measurement is stable due to the compression of the bubbles when the bubbles are inside and under high pressure, but the breathing of the spray becomes intense because of the rapid expansion to the atmospheric pressure during injection. become.

  In addition, by providing the hollow fiber membrane type deaeration module, it is acceptable even if there is a slight stagnation or a rise in the liquid temperature upstream, so an air chamber can be used as an accumulator for preventing pulsation. Very few design constraints. However, after degassing, the solution must be delivered quickly and smoothly to the end. It is preferable to minimize piping and minimize temperature rise. As a layout requirement of the hollow fiber membrane type deaeration module specification, the module is placed vertically, and the flow at the liquid inlet of the module is particularly preferably from the top to the bottom. For example, in the hollow fiber membrane type deaeration module, the processing liquid inlet / outlet header forms a large space, and this becomes a large air pocket except for the vertical installation. When the liquid is flowed from the bottom to the top in a vertical orientation, the bubbles enter the deaeration tube at a time when the bubbles flow in, and are not preferable because they cannot pass through the deaeration tube and pass through the deaeration tube.

  In the hydrogen peroxide solution stable supply apparatus of the present invention, it is preferable to dispose a hydrogen peroxide flow meter on the downstream side of the deaeration module and on the upstream side of the nozzle portion in consideration of safety. As such a flow meter, the Coriolis type has a simple internal structure, the wetted part can be made of a material suitable for hydrogen peroxide water, and the measurement accuracy in a minute flow rate range is excellent. A mass flow meter is preferred.

In the stable hydrogen peroxide supply device of the present invention, it is preferable that the nozzle portion has a pressurizing mechanism in consideration of safety. The pressure mechanism in such a nozzle unit, configured as a bypass with pressure pin, parallel pin which has been subjected to D-cut, in cross-section crescent-shaped constriction portion formed between the cylinder wall surface for inserting the pin By forming the pressurizing flow path, the pressurization value can be set freely and the accuracy can be easily secured. In addition, a through-hole is provided in the center in the axial direction of the pin, and when the pressure is applied, the hole is closed, and when the gas is vented, the through-hole can be selected. Thereby, in addition to realizing a parallel circuit (bypass) without a stagnant portion, there are advantages that disassembly and cleaning are easy. In addition, a destination for stably spraying and supplying a very small amount of high-concentration hydrogen peroxide from the nozzle portion is in the bactericide gasifier, but can also be sprayed and supplied directly into the container.

  The liquid supply pipe is not particularly limited as long as it is a pipe that communicates a hydrogen peroxide solution storage tank and a nozzle portion and guides the hydrogen peroxide solution in the tank to the nozzle portion. It is preferable that the thickness of the pump is narrow as long as there is no problem in the discharge capacity of the liquid feed pump and the physical strength (not broken) of the piping itself. Moreover, it is preferable to make part or all transparent, since the state of bubbles in the liquid feeding pipe can be visually recognized.

For example, by reducing the diameter of a φ4 × φ2 Teflon (registered trademark) tube as a connecting pipe between components, there is the aim of preventing the retention of small bubbles. The purpose is to prevent the liquid temperature from rising from a high temperature environment by shortening the temperature and reducing the heat receiving area. Although it may be made thinner depending on use conditions, it is not preferable for an actual machine because problems such as easy breakage, clogging, and excessive discharge pump load are likely to occur.

  In addition, it is preferable to positively eliminate the step generated in the liquid feeding pipe joint part because it becomes a hydrogen peroxide water retention source (air pocket), and the pipe joint preferably has a small liquid channel step. . That is, it is preferable to reduce the change in the cross-sectional area of the pipe that occurs in the liquid-feeding pipe connecting portion. For this purpose, for example, a core with a hole (core) for eliminating a step can be used effectively. The material of the core with a hole (core) is preferably made of a material such as silicon rubber, which has moderate elasticity, is not affected by contact with hydrogen peroxide solution, and does not destabilize the hydrogen peroxide solution.

Hereinafter, an embodiment of the apparatus for stably supplying a small amount of high-concentration hydrogen peroxide solution of the present invention will be described with reference to the drawings.
FIG. 1 shows a system diagram from line 1 (L1) to line 7 (L7).
Line 1 (L1);
The plunger pump 4 (delivering the sterilizing agent) sucks the sterilizing agent (hydrogen peroxide solution) 2 in the tank 1 through the filter 3 (removal of foreign matter in the sterilizing agent).
Line 2 (L2);
The hydrogen peroxide solution 2 is degassed by the degassing module 7.
Line 3 (L3);
An air chamber 5 is provided to suppress pulsation of the sucked up hydrogen peroxide solution 2. A pressure gauge 6 is connected to the air chamber 5, and the pump is stopped when an abnormal pressure in the pipe is detected (when the pipe is clogged, the pressure is high, and when leaking, the pressure is low).
Line 4 (L4);
The flow rate of the degassed hydrogen peroxide solution 2 is accurately measured by a flow meter 8 (Coriolis micro flow meter).
Line 5 (L5);
A pressure pin 9 is provided for stably supplying the hydrogen peroxide solution 2 to the spray nozzle 11. The hydrogen peroxide solution 2 sprayed by the spray nozzle 11 is refined by the air from the line 6 (L6), vaporized by the vaporizer 12, and ejected from the gas spray nozzle 14 to the container C (the spray gas by the thermometer 13). Temperature is controlled).

The vacuum line (L 7) from the air chamber 5 and the deaeration module 7 has a hydrogen peroxide water leak detection device from the hydrophobic membrane 21 and the hollow fiber membrane 26.
When degassing the pipe at the beginning of liquid feeding, by opening the through hole (bypass) 39 in the pressurizing pin 9, the pressure in the pipe is lowered and the gas is smoothly discharged.
For the lines 6 (L6) and 7 (L7), a general air piping material is used. Especially, the piping (L1 to L5) connecting each device is as thin as possible a Teflon (registered trademark) tube (φ4 ). Xφ2) is used, and the passage time between the devices is shortened to prevent the liquid temperature from rising. In addition, a fluororesin, stainless steel, etc. can be used as a piping material as a material which does not accelerate | stimulate decomposition | disassembly of hydrogen peroxide.

FIG. 2 shows a partial cross section of the pump connection portion in the hydrogen peroxide solution stable supply apparatus of the present invention. Moreover, the cross section of the flowmeter connection part in the hydrogen peroxide solution stable supply apparatus of this invention and the expanded cross section are shown by FIG.
The cores 18 and 31 are used for the purpose of reducing the level difference (change in the cross-sectional area of the pipe) and the volume generated at the pipe connection part. The shape varies depending on where it is used. The material used is silicon rubber (hardness 70 ° ± 5 °).
The cores 18 and 31 are manufactured 25 to 30% larger than the dimensions stored in the direction in which they are pushed in by the joints 19 and 32, and are deformed (shrink in the axial direction and enlarged in the radial direction) by the screwed joints 19 and 32. As a result, the shape is as free as possible in the piping.
In the drawings, the outlet 30 / discharge port 16 side is described, but the same core is used on the inlet 29 / suction port 15 side, and the core is used at the step portion in the connecting portion of other piping. it can.

FIG. 3 shows a cross section of an air chamber portion configured as an air chamber type accumulator with a membrane in the hydrogen peroxide solution stable supply apparatus of the present invention.
An opening 20 is provided at the lower side of the side chamber of the air chamber 5, a hydrophobic membrane 21 is attached with a membrane presser 22, and only the gas is discharged by evacuating the connection port 23 through the membrane (L7). Does not fall below the position of the membrane, and there is no fear that the gas in the air chamber 5 is mixed into the pipe.

FIG. 4 shows a cross section of the deaeration module in the hydrogen peroxide solution stable supply apparatus of the present invention, and FIG. 5 shows an enlarged cross section thereof.
A large number of hollow fiber membranes 26 gathered together by a gathering and binding portion 27 that binds and seals the ends of the hollow fiber membranes 26 are fixed in the degassing module 7, and the hydrogen peroxide solution 2 is supplied to the degassing module 7. When the inlet 24 is set to a position higher than the outlet 25 and the hydrogen peroxide solution 2 flows from the high position to the low position through the degassing module 7, the bubbles are accumulated in the upper part of the space S by buoyancy. Since it flows gradually and does not flow too much in the hollow fiber membrane 26 part, it deaerates efficiently.
Further, the connection port 28 near the inlet 24 and the outlet 25 is connected to the vacuum line (L7), and the gas degassed from the hydrogen peroxide solution 2 is evacuated.

The cross section of the nozzle part provided with the pressure pin with a bypass in the hydrogen peroxide solution stable supply apparatus of this invention is shown by FIG.
A through hole (bypass) 39 in the axial center of the pressure pin 9 is closed by a pusher 36 when the pipe is pressurized (the bypass release valve 10 is configured by the through hole 39 and the pusher 36 of the pressure pin 9). It is opened only when degassing. Since the pusher 36 is screwed with the block 35, the pusher 36 can be rotated to perform a closing / opening operation. Since the pressure pin 9 is engaged with the cylinder 37, the pressure value in the pipe is set by D cut of the pressure pin 9 (chamfering by D cut formed when stored in the cylinder 37). Adjustment is performed with a gap H 2 formed between the flat surface of the pin 9 and the curved wall surface of the cylinder 37.
The pressure value in the pipe is 0.02 to 0.2 MPa.
In the case of a pressure pin with a diameter of 6 mm and a length of 35 mm, the D-cut dimension is 5.82 to 5.94 mm.
The hydrogen peroxide solution 2 ejected from the needle 38 is further refined by the air supplied from the air connection port 34, and is vaporized into a gaseous state in the vaporizer (sterilant gasifier) main body 40.

Commercially available membrane type deaeration module [High flow bubble trap OM3320 (Isis) membrane material: PTFE] and hollow fiber membrane type deaeration module [Nagasep M60-4500 × 100L (Nagayanagi Kogyo) hollow fiber membrane material: silicon rubber] I tried it.
Except for using an accumulator that has a function of suppressing pulsation instead of an air chamber accumulator with a membrane, the liquid feed line is not pressurized (no intentional restriction) so that the effect is easy to understand. A water supply device was used. Defoaming / deaeration level of the liquid supply piping is 3 patterns of (1) No degassing (2) Use of membrane type deaeration module (3) Use of hollow fiber membrane type deaeration module The performance of each deaeration module was evaluated by comparing the output of the flow meter when the liquid was delivered per minute (at a flow meter response time of 0.05 sec / data logger sampling of 0.1 sec). The results are shown in FIG.

  As is clear from FIG. 9, the hollow fiber membrane type deaeration module is the most excellent in liquid feeding stabilization, and the membrane type deaeration module is not as effective in stabilizing the liquid feeding as the hollow fiber membrane type deaeration module. It was. However, the difference between the presence and absence of deaeration is also clear, and it was found that the liquid feeding can be stabilized even with the membrane type deaeration module if the flow rate is larger than the test conditions and the pressure is high.

  The present invention is useful in the field of filling and packaging machines for liquid foods such as milk and juice.

1 Tank 2 Disinfectant (hydrogen peroxide solution)
3 Filter 4 Plunger pump 5 Air chamber 6 Pressure gauge 7 Deaeration module 8 Flow meter 9 Pressure pin 10 Bypass release valve 11 Spray nozzle 12 Vaporizer 13 Thermometer 14 Gas injection nozzle 15 Suction port 16 Discharge port 17 Nipple 18 Core 19 Joint 20 Opening 21 Hydrophobic Membrane 22 Membrane Presser 23 Connection Port 24 Inlet 25 Outlet 26 Hollow Fiber Membrane 27 Collective Bundling Portion 28 Connection Port 29 Inlet 30 Outlet 31 Core 32 Joint 33 Hydrogen Peroxide Water Connection Port 34 Air Connection Port 35 Block 36 Pusher 37 Cylinder 38 Needle 39 Through hole (Bypass)
40 Vaporizer body C Containers L1 to L7 Line 1 to Line 7
S space H gap

Claims (12)

A tank for storing hydrogen peroxide solution;
A liquid feed pump which is disposed downstream of the tank and sucks the hydrogen peroxide solution in the tank;
An air chamber portion disposed on the downstream side of the liquid feed pump and suppressing pulsation of discharged hydrogen peroxide solution;
A deaeration module that is disposed downstream of the branch between the liquid feed pump and the air chamber unit (excluding the air chamber side) and removes gas in the hydrogen peroxide solution ;
A nozzle unit disposed on the downstream side of the deaeration module and spraying hydrogen peroxide water;
A liquid supply pipe for introducing hydrogen peroxide from the tank to the nozzle;
With
In the deaeration module, a collective bundling portion in which a large number of hollow fiber membranes are bundled is fixed inside, so that the hydrogen peroxide water inlet is positioned higher than the hydrogen peroxide water outlet. A stable supply apparatus for hydrogen peroxide water, which is provided. 2. The stable supply device according to claim 1, wherein the liquid feed pump is a plunger pump. The stable supply device according to claim 1 or 2, wherein the air chamber is an air chamber accumulator with a membrane. The stable supply device according to any one of claims 1 to 3, wherein a flow meter is disposed downstream of the deaeration module and upstream of the nozzle portion. The stable supply device according to claim 4, wherein the flow meter is a Coriolis type mass flow meter. The stable supply device according to any one of claims 1 to 5, wherein the nozzle portion is a nozzle portion that sprays and supplies hydrogen peroxide water into the sterilizing agent gasifier. The stable supply device according to any one of claims 1 to 6, wherein the nozzle portion has a pressurizing mechanism. The stable supply device according to claim 7, wherein the pressurizing mechanism is configured as a pressurizing pin with a bypass. The stable supply device according to any one of claims 1 to 8, wherein a core is used in order to reduce a change in the pipe cross-sectional area generated in the pipe connection portion. The stable supply device according to claim 1, wherein the tank is a tank with a cooling function. Spraying and supplying 10 to 35% by mass of hydrogen peroxide water at a flow rate of 5 to 40 ml / min into the bactericide gasifier or the container using the stable supply device according to claim 1. A stable supply method for high-concentration hydrogen peroxide water, characterized by Using the stable supply device according to any one of claims 1 to 10, spraying and supplying 2-45 mass% hydrogen peroxide water into a disinfectant gasifier or a container at a flow rate of 5 to 50 ml / min. A method for stably supplying hydrogen peroxide water.