JPS5983913A - Tool for generating hydrogen sulfide - Google Patents

Abstract

PURPOSE:The titled tool, having a glass tube holding a volatile acid on the inside thereof and a glass tube holding a metallic sulfide on the inside thereof in combination, and suitable to the used for operation check of a measuring device for hydrogen sulfide, etc. CONSTITUTION:A tool for generating hydrogen sulfide, having the first glass tube 4 prepared by sealing a packed bed (A), e.g. a silica gel bed adsorbing acetic acid, prepared by adsorbing a volatile acid in a porous carrier, and inserted between plugs 2 and 2 in a glass tube 1 (numerals 3 are heat sealed parts) and the second glass tube 5 prepared by sealing a packed bed (B), e.g. an activated alumina bed adsorbing sodium sulfide, obtained by adsorbing a metallic sulfide in a porous carrier, and inserted between air-permeable plugs 7 and 7 in a glass tube 6 (numerals 8 are heat sealed parts), and formed by opening the sealed parts 3 and 8 of the respective glass tubes 4 and 5, and connecting an air supply pump 12 to the first glass tube 4, a rubber tube 9, the second glass tube 5, a connection tool 13 and a plastic bag 14.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a hydrogen sulfide generation device, particularly hydrogen sulfide 1
111 Pertains to a device for generating sulfur-specific water accumulation suitable for checking the operation of constant precipitation and wiping equipment.

Needless to say, arsenic is a deadly poisonous gas, which is generated by the decay of organic matter, chemical changes underground, etc. For example, tanks that have been filled with sludge, sewage pipes, or substances that are susceptible to decay or decomposition.

Sulfur and arsenic water is likely to form inside ship holds, manholes, etc. Therefore, when entering the inside of these manholes, tanks, etc., it is necessary to use a hydrogen sulfide meter in front of the vehicle to ensure that the hydrogen sulfide level in the internal atmosphere is below the permissible level. It is necessary to check the operation of this hydrogen sulfide measuring device or alarm device at the site where it is used, and it is necessary to confirm that there is no malfunction through this check.

In fact, one prefecture of hydrogen sulfide gas is required for the operation of the sulfur [arsenic] alarm, and one water-flow high-pressure container is used, or a U-shaped pipe in which liquefied hydrogen sulfide is sealed in a Teflon pipe is used.
There are problems with storage, transportation, etc. = 1) It is troublesome.

The most common laboratory method for producing hydrogen sulfide is to add dilute sulfuric acid to iron sulfide using a Kipp device, etc.
Since the enteric mixture solution is 15%, after use, a waste containing hydrogen sulfide in multiple phases remains, which makes treatment troublesome due to its foul odor, and hydrogen sulfide is generated in gaseous form in large quantities from a small amount of iron sulfide. To check the operation, it is generally necessary to have a small value and water flow rate, but since a large amount of water is generated, it is difficult to set it up so that only the necessary water is generated.

Thus, the present invention uses a high-pressure container shade.tx <There is no problem with drainage, etc., and a small amount of hydrogen sulfide is easily generated, allowing one worker to easily check the operation of N11 regulators and alarms on the spot. The object of the present invention is to provide a hydrogen sulfide generating device that can perform the following steps.

According to research and experiments conducted by the present inventors, this purpose was achieved by using a glass tube having a packed bed of a porous koji carrier adsorbing a volatile acid-free or sulfuric acid, and a glass tube carrying sulfide. It has now been discovered that this can be achieved by a unique hydrogen generating utensil comprising a porous carrier-filled glass tube with a backing layer.

The present invention will be described in more detail with reference to the embodiments shown in the drawings, in which volatile or organic ferments such as hydrogen chloride, hydrochloric acid, sulfuric acid, acetic acid, etc. (In addition, the diameter of the packed bed formed by adsorption on the carrier is about 3 to 5 mm.
〃It is formed in a long and thin glass tube 1 with a shoulder length of about 100 to 120 mm, and both sides of the packed layer A are closed with plugs 2, and then the glass tube 1 is
Dissolve both 11A3 of 1. 'p4・) Seal the first glass tube 4
shall be.

On the other hand, a second glass tube 5 having a packed bed B in which a porous carrier supports gold sulfide such as iron sulfide, arsenic sulfide, and sodium sulfide is prepared. For example, a mixture of fine powder of iron sulfide and activated alumina, or a solution of caustic soda such as lead sulfide or sulfuric acid (IJum) adsorbed onto activated alumina and dried at low temperature, is made into a long, thin glass tube similar to a sagi. Both ends of the packed bed B are stopped with plugs 7, and both ends 8 of the glass tube 60 are sealed by melt sealing to form a second glass tube 5. Sodium sulfide is preferred because it can be supported relatively uniformly on the carrier.

When in use, cut both ends of the glass tubes 4 and 50, unseal them, connect them with a rubber tube 9, and then connect the other end of the first glass tube 4 with a rubber tube having an air reservoir 10 and a grip bulb 11. The other end of the second glass tube 5 is inserted into a plastic bag 14 via a connector 13.

Taking as an example the case where chlorinated ice cream is used as the volatile inorganic acid in the packed layer A of the second glass tube 4 and lead sulfide is used as the metal sulfide in the packed layer B of the second glass tube 9, first the air supply pump 12 When air is sent to the packed bed A of the first glass tube 4, hydrogen chloride gas is desorbed from the silica gel, and this reaches the packed bed B of the second glass tube 5, where it reacts as shown in the following formula and sulfurizes from the packed bed B. Hydrogen is generated, which is sent into the nose ring 14 to create an atmosphere containing a certain concentration of hydrogen sulfide therein, which can be used to check the operation of the hydrogen sulfide alarm.

If the amount of air supplied by the air pump is constant and sufficient for desorption of acidic gas, the amount of air in the bag will be constant, so the amount of metal sulfide involved in the reaction, that is, the amount of air in the bag will be constant. By adjusting the filling length of the packed layer B of the Niglass tube, it is possible to freely adjust the hydrogen sulfide concentration in the bag and obtain the required amount of hydrogen sulfide.

Thus, according to the present invention, it is made up of two elongated glasses and tubes filled with packed beds carrying respective reagents, and since these are connected to an air pump and a nose ring, a high-pressure container is not required. Overall, it is small, lightweight, and easy to handle.
Hydrogen sulfide can be easily generated at the work site to check the operation of measuring instruments and alarms. Furthermore, there are no problems with drainage, etc., and it is convenient because it can be adjusted to obtain only the required amount of hydrogen sulfide gas. Since the packed layers A and B are filled in separate tubes, the quality does not deteriorate during storage. Thus, the present invention provides an effective device for generating hydrogen sulfide.

Examples of the present invention are given below.

The sodium sulfide of Example 4f was added to 50% of a 1N aqueous solution of caustic soda.
- 50 to 150 mesh activated alumina dissolved in 1
Add to oo y, mix well, and then dry.

This is a glass with an inner diameter of 3wn, an outer diameter of 5mm, and a length of 110mm.
+ The tube was filled with about 20 rtaa and both ends were closed with cloth plugs to form a packed layer B, and both ends of the tube were melted and sealed to form a second glass tube.

Also, acetic acid is added to 100 y of silica gel of 20 to 80 meshes, mixed well, and adsorbed. This was filled into a slender glass tube of the same size as before to a length of about 20 Trrm and fixed with a cloth frame to form a filling/mA, and both ends of the tube were melted and sealed to make a second glass tube. .

Both ends of this i-1 second glass tube were cut and unsealed before use, and the air pump, first glass tube, second glass tube, and plastic bag were connected in this order as shown in FIG. 3 of the drawings. If approximately 101 air is introduced from the pump side, approximately 3
Hydrogen sulfide at a concentration of 0 ppm was changed. When the air supply lid was kept constant, the filling length of packed bed B and the hydrogen sulfide concentration in the lag circles were directly proportional.

[Brief explanation of drawings]

FIG. 1 is a side view of a first glass tube, FIG. 2 is a side view of a second glass tube, and FIG. 3 is a diagram illustrating the state of use of the same. A, B... Filled bed, 4... First glass tube, 5...
Second glass tube, 12...Air supply pump, 14...Plastic panda. Applicant's agent Inomata Kiyoshi Procedural Amendment December 1980 TD Director General of the Patent Office Kazuo Wakasugi 1, Indication of the case 1983 Patent Application No. 193676 2, Name of the invention Apparatus for generating hydrogen sulfide 3, Person making the amendment Relationship to the case Patent applicant Komei Rikagaku Kogyo Co., Ltd. Column 8 of the "Detailed Description of the Invention" in the specification, Contents of the amendment (1) Clear IvIt's 3 M10 Line r Achievement" [Achievement J Correction Yk. (2) On page 3, line 14, "sulfuric acid" is corrected to "nitric acid."

Claims (1)

[Claims] A glass tube having a packed layer of a porous carrier adsorbing a volatile inorganic or organic acid, and a porous a supporting a total sulfide.
and a glass tube having a packed bed of carrier.