JPH08157885A - Detergent for airplane galley drain pipe and its use - Google Patents

Abstract

PURPOSE: To obtain the subject detergent consisting of an aqueous solution of hydrogen peroxide of a specified concentration, capable of completely removing the suspended matter in and stuck matter to the drain pipes of an airplane galley by a single operation without corroding/deteriorating the airplane material, pipe material and pipe binder. CONSTITUTION: This detergent consists of a 2-5wt.% aqueous H2 O2 solution, and is used for cleansing the drain pipes of an airplane galley by charging it from the galley.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning agent for use in an aircraft galley drainage pipe, which effectively cleans galley waste deposited and deposited on a drainage pipe made up of complex thin tubes in an aircraft, and its use. Regarding the method.

[0002]

2. Description of the Related Art Conventionally, as a method for cleaning an aircraft galley, when the aircraft is under maintenance, the galley drain pipe is removed from the aircraft, the drain pipe is dipped in a strong alkali or a strong acid detergent, and attached to the drain pipe. How to remove deposits. Alternatively, a method of mechanically using a brush or the like has been adopted. It is also possible to use the drainage cleaning composition for general households. These detergents are mainly those in which a surfactant is mixed with a peroxide, and JP-A-61-258900 discloses.
JP-A-3-131700 and the like are disclosed. The above-mentioned peroxide is a hydrogen peroxide adduct of percarbonate, sodium silicate or sodium sulfate.

[0003]

As a conventional method for cleaning the above-mentioned drain pipe, the drain pipe of the aircraft galley is removed,
Cleaning has to be performed, and the cleaning work becomes complicated,
I spend about a week working. In addition, drainage cleaners for general households are used for drainage pipes in domestic kitchens, bathrooms, toilets, etc. Since it is arranged in a narrow space, which is peculiar to the structure, by a thin tube, it is necessary to decompose and deposit the deposits deposited and accumulated in the pipe in a short time only by the injection operation from the galley drain port inside the machine. Therefore, a sufficient effect cannot be expected with general household drainage pipe cleaning agents. In addition, sodium hypochlorite, which has a very strong organic matter decomposing ability, cannot corrode or deteriorate the aluminum alloy and the joint rubber of pipes, which are the materials of aircraft, and cannot be used.

[0004]

[Means for Solving the Problems] In order to achieve the above object, the present invention has conducted extensive studies and conducted many experiments, and as a result, when an aqueous solution of hydrogen peroxide of 2 to 5% was used, it was complicated in the aircraft. By a single injection operation of the deposit of galley drainage pipe composed of various thin tubes, the deposit can be completely removed without corroding or deteriorating the material of the aircraft, the material of the pipe and the bonding agent of the pipe, The present invention has been completed with the finding that since it contains hydrogen peroxide, it decomposes into water and oxygen after the cleaning operation and has no problem in wastewater treatment. The present invention is a cleaning agent for aircraft galley drainage pipes, which is composed of a 2 to 5 (wt)% aqueous solution of hydrogen peroxide.

The cleaning agent of the present invention contains hydrogen peroxide in an amount of 2 to 5
It is a solution diluted to (weight)%. 2-5 of hydrogen peroxide
If the content of (weight)% is less than 2% by weight, the cleaning effect is insufficient, and if it exceeds 5% by weight, it becomes a deleterious substance and is dangerous in handling and storage.

Next, the present invention will be described in more detail by way of examples of the present invention.

[0007]

[Example 1] 2 liters of a 5 wt% aqueous solution of hydrogen peroxide was injected from a galley discharge port of an aircraft (Boeing 747) for 20 seconds using a poly jug, and the effluent was received from a drain mast at the bottom of the aircraft with a plastic vat. . Repeat this operation 10 times. Further, 10 liters of water was similarly injected from the discharge port over 30 seconds, and the discharged matter was received by a plastic vat with a drain mast. When the discharge was observed after injecting a 5% by weight aqueous solution of hydrogen peroxide, a brown solid discharge with a coffee odor was observed, and the amount increased until after injection of 10 l. It gradually decreased, and the discharge rate became faster. When water was being injected, the solids had almost disappeared and the color of the discharged liquid was almost transparent.

[0008]

[Example 2] 1 liter of a 5 wt% aqueous solution of hydrogen peroxide was injected from a galley discharge port of an aircraft (Boeing 767) for 20 seconds using a poly jug, and the effluent was received from a drain mast at the bottom of the aircraft with a plastic vat. . This operation is repeated 8 times. Further, 10 liters of water was similarly injected from the discharge port over 30 seconds, and the discharged matter was received by a plastic vat with a drain mast. When the discharge was observed after injecting a 5% by weight aqueous solution of hydrogen peroxide, a yellow-brown string-like wastewater was observed, and the amount increased until after the injection of 5 l. It gradually decreased, and the discharge rate became faster. When water was being injected, the solids had almost disappeared and the color of the discharged liquid was almost transparent.

[0009]

[Test Example] An aircraft galley drain pipe cleaning test was conducted by changing the hydrogen peroxide content.

[0010]

[Table 1]

[0011]

As described above, the present invention completely removes floating matters and deposits from aircraft galley drain pipes in a single operation,
It is an industrially extremely useful invention that can clean the inside of the pipe and does not corrode and deteriorate the pipe material and the bonding agent of the pipe.

Claims (2)

[Claims] 1. A cleaning agent for an aircraft galley drainage pipe, which comprises an aqueous solution of 2 to 5% by weight of hydrogen peroxide. 2. A method of using a cleaning agent for an aircraft galley drainage pipe, which comprises introducing a cleaning agent composed of a 2 to 5 (wt)% aqueous solution of hydrogen peroxide from a galley in an aircraft.