JP2584728Y2 - Ammonia removal device in absorption refrigerator - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing ammonia in an absorption refrigerator containing nitrate and / or nitrite in an absorption solution.

[0002]

2. Description of the Related Art When nitrate or nitrite is contained in an absorption solution of an absorption refrigerator, ammonia (NH ₃ ) as a condensable gas is generated in the absorption refrigerator due to corrosion or the like. This NH ₃
It is necessary to remove the NH ₃ because it lowers the degree of vacuum in the machine and dissolves in the refrigerant to corrode the copper material. Conventionally, since the removal of NH ₃ cannot be removed by a normal gas exhaust method, it is performed by maintenance. There is also a method of discharging by an ejector method using cold and hot water.

[0003]

[Problems to be Solved by the Invention] When NH ₃ is removed by bleeding maintenance every time the degree of vacuum in the absorption refrigerator decreases, the usage efficiency is low, and NH ₃ dissolves in the refrigerant. Therefore, there is a problem that it cannot be sufficiently removed. On the other hand, in the ejector method using cold and hot water, there was a risk that NH ₃ would be dissolved in cold and hot water and the like, causing stress corrosion cracking of the copper coil.

An object of the present invention is to provide an NH ₃ removal apparatus in an absorption refrigerator that can maintain a high vacuum in the absorption refrigerator without maintenance and is less likely to corrode a copper material.

[0005]

In order to achieve the above object, the present invention provides an apparatus for removing ammonia in an absorption refrigerator containing nitrate and / or nitrite in an absorption solution.
In the refrigerant circuit from the condenser in the absorption refrigerator to the evaporator, a synthetic adsorbent containing an ion exchange type aluminum compound and a silicon compound that adsorbs ammonium ions in the refrigerant liquid is provided in the refrigerant circuit. It is an ammonia removal device in an absorption refrigerator.

[0006]

In an absorption refrigerator containing nitrate and / or nitrite in the absorption solution, NH ₃ is generated inside the absorption chiller due to its operation. Since NH ₃ dissolves in the refrigerant to form NH ₄ ions, the absorption refrigeration is performed. Evaporator from in-flight condenser
Is adsorbed and removed by a synthetic adsorbent containing an ion-exchange type aluminum compound and a silicon compound provided in a refrigerant circuit leading to the refrigerant circuit. Therefore, the high vacuum state in the machine is maintained. Moreover, there is no maintenance.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. In FIG. 1, 1 is a condenser, 2 is a refrigerant pump, 3 is a refrigerant storage room, 6 is an evaporator, 7
Indicates an absorber. In this embodiment, the condenser 1
Refrigerant circuit 8 from the bottom to evaporator 6
Adsorbent 5 NH ₃ adsorbs and was the NH ₄ ions dissolved in the refrigerant liquid is provided in the. This adsorbent is a synthetic adsorbent containing an ion-exchange type aluminum compound and a silicon compound having an alkali adsorption ability, for example, Al ₂ O ₃
· 9SiO ₂ · nH ₂ O. This substance is a substance having a strong solid acid strength and a very strong alkali adsorption ability.
That is, it has a cation exchange ability. It also has the ability to adsorb basic dyes. This substance is filled in the adsorbent chamber 4. This adsorbent chamber 4 is desirably made into a cassette type so that it can be easily replaced after adsorbing NH ₄ ions.

Next, the operation of the above embodiment will be described. The NH ₃ gas generated in the absorption refrigerator mainly dissolves in the refrigerant liquid . And it will be in the state of NH ₄ ions. When the refrigerant liquid containing NH ₄ ions flows between the condenser 1 and the evaporator 6, the refrigerant liquid comes into contact with the adsorbent 5 and the NH ₄ ions are chemically adsorbed by the ion exchange type adsorbent. Since NH ₃ once adsorbed by this chemisorption does not desorb, N ₃ in the refrigerant
H ₃ is gradually absorbed and removed, whereby the degree of vacuum in the absorption refrigerator is maintained at a high vacuum. In addition, no bleeding maintenance is required, and there is little risk of corrosion of the copper material. When the adsorption amount of the adsorbent is saturated, NH ₃ can be constantly removed by replacing the adsorbent with a new adsorbent.

[0009]

According to the present invention, in an absorption refrigerator containing nitrate and / or nitrite in an absorption solution, NH ₃ generated during the operation is always removed by an adsorbent. Can always be maintained in a high vacuum, and the risk of corrosion of the copper material can be reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Condenser 3 Refrigerant storage room 4 Adsorbent chamber 5 Adsorbent

──────────────────────────────────────────────────の Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F25B 43/04

Claims (1)

(57) [Scope of request for utility model registration] 1. An ammonia removing apparatus in an absorption refrigerator including nitrate and / or nitrite in an absorption solution,
The refrigerant circuit from the condenser in the absorption refrigerator to the evaporator is provided with a synthetic adsorbent containing an ion exchange type aluminum compound and a silicon compound that adsorbs ammonium ions in the refrigerant liquid in the refrigerant circuit. Ammonia removal device in absorption refrigerator.