Preparation technology of calcium lime absorbent for carbon dioxide in anesthesia respirator

Abstract

The invention belongs to the technical field of medical carbon dioxide absorption and particularly relates to a preparation technology of a calcium lime absorbent for carbon dioxide in an anesthesia respirator. The preparation technology is characterized by comprising the following steps: a nanoscale zirconium nitrate solution with the concentration of 0.1 g / ml is prepared; a calcium salt solution with the concentration of 0.01 g / ml is prepared; the two solutions are mixed, a dispersing agent accounting for 1%-3% of the mass sum of nanoscale zirconium nitrate and calcium salt is added, and the mixture is subjected to ultrasonic processing for 30 min-60 min at the temperature of 60-80 DEG C; a weak base solution is added to regulate the pH to be alkaline; a product is subjected to centrifugal filtration and evaporating dehydration until the product is gelatinous or pasty, and the product is washed with ethanol and dried and ground to the required mesh number; the product after drying and grinding is calcined for 30-40 min at the temperature of 700-1,000 DEG C to prepare the absorbent. The preparation technology has the benefits as follows: obtained calcium lime has large specific surface area and good absorption effect and can keep higher carbon dioxide absorption rate after repeated calcination and recovery.

Description

technical field [0001] The invention belongs to the technical field of medical carbon dioxide absorption, and in particular relates to a preparation process of a calcium lime absorbent for anesthesia ventilator carbon dioxide. Background technique [0002] An anesthesia ventilator is a device that provides gas anesthesia and respiratory management functions for patients. In actual clinical use, the supply of oxygen and anesthetics are operated by doctors. Due to the different conditions of each patient, patients also need different supplies in different stages of the disease. In the case of dyspnea, the patient will Carbon dioxide uptake is especially important. Medical calcium lime is often placed in the ventilator to absorb carbon dioxide. It does not produce harmful substances such as carbon monoxide and formaldehyde, and has low dust. However, the existing calcium lime has limited absorption capacity, and the absorption effect is significantly reduced during high-temper...

AI Technical Summary

Problems solved by technology

Medical calcium lime is often placed in the ventilator to absorb carbon dioxide. It does not produce harmful substances such as carbon monoxide and formaldehyde, and has low dust. However, the existing calcium lime has limited absorption capacity, and the absorption effect is significantly reduced during high-temperature regeneration, and the pore structure is destroyed. The surface area changes greatly, which is not conducive to repeated absorption and repeated use