SU1215736A1 - Ammonium absorber - Google Patents

Description

This invention relates to an ammonia and hydrogen sulfide scavenger and can be used in respiratory personal protective equipment - filter respirators.

The purpose of the invention is to increase the dynamic sorption capacity for ammonia and impart sorption capacity for hydrogen sulfide.

Example 1. A granular macroporous copolymer of styrene and divinylbenzene with functional sulfo groups (technical name cation-exchange resin KU-23) is taken in copper form with a copper ion content of 8.0 wt.% And ground to a powder mill with a particle size less than 0. 1 mm. Then take a non-woven material that represents

a canvas about 0.2 mm thick and applied it by blowing cationite powder to a content of .65 wt.% in the absorber powder and 35 wt.% fibrous nonwoven material.

65

35

Through the thus obtained absorber, the gas-air mixture at the temperature of 20-25 ° Ci and a relative humidity of 50% is dropped through the air; specific speed of 0.25 l / min. cm; concentration of ammonia 200 about SKOKOVOY concentration of ammonia 2 concentration of hydrogen sulfide 200 slip concentration

hydrogen sulfide 1 mg / m

The dynamic sorption capacity of the absorber is 40 for ammonia and 52 mg / g for hydrogen sulfide. Examples 2 and 3 are similar to the example.

1 with the exception of the content of the components in the absorber, which are listed in Table 1;

Example4. Under the conditions of Example 1, the dynamic sorption capacity of the absorber (fibrous nonwoven material 35 wt.%, Ca.-thion-exchange resin 65 wt.%) With different content of copper ions in the cation-exchange resin is examined. The results are shown in Table 2.

 Table i

40

52

Table 2

Claims (2)

1. AMMONIA ABSORBENT, containing a cation exchange resin - a copolymer of styrene and divinylbenzene with functional sulfo groups in copper form, characterized in that, in order to increase the dynamic sorption capacity for ammonia and impart sorption capacity for hydrogen sulfide, it additionally contains a fibrous non-woven metarial in the following ratio components, wt.%: The specified cation exchange resin 65-80 Fibrous nonwoven fabric 20-35 2. The absorber according to π. 1, characterized in that the cation exchange resin contains 8.0 to 10.5 may.% Copper ions. yu s o