抗生素菌渣催化热解特性的研究

为了将生物质转化为高品质的液体燃料,以青霉素菌渣为催化热解实验原料,在温度为400,500,600,700℃下进行热解实验,以生物质油产率最大化为目的,探究最佳热解温度。在此基础上,选用CoO/HZSM-5和NiO/HZSM-5作为催化剂,对青霉素菌渣进行催化热解实验,探究催化剂对生物油催化提质的作用。结果表明:不添加催化剂时,青霉素菌渣在500℃条件下热解所得的生物质油产率达到最高。在此温度条件下,添加催化剂CoO/HZSM-5和NiO/HZSM-5时,生物质油的产率相对降低,但催化热解后生物油中烃类物质含量分别增加8.66,7.41百分点,达到25.34%和24.09%;含氧类物质如醇类、酯类和醛类物质含量分别降低9.68,12.49百分点,为31.74%和30.34%;含氮杂环类物质含量分别降低5.96,12.49百分点,为32.51%和35.07%。天冬氨酸、组氨酸、谷氨酸和中间产物DKP的催化热解实验进一步解释了青霉素菌渣催化热解的机理。

SSTUDY ON CATALYTIC PYROLYSIS CHARACTERISTICS OF ANTIBIOTIC RESIDUE

In order to convert biomass into high-quality liquid fuel, penicillin residue was selected as catalytic pyrolysis material and pyrolysis experiments were carried out at temperatures of 400℃, 500℃, 600℃ and 700℃. To maximize the yield of biomass oil, the optimal pyrolysis temperature was explored. On this basis, CoO/HZSM-5 and NiO/HZSM-5 were selected as catalysts for catalytic pyrolysis of penicillin residue to explore their catalytic effect on the quality improvement of bio-oil. The results showed that the yield of biomass oil obtained by pyrolysis of penicillin residue at 500℃ reached the peak without catalyst. At the same temperature, the yield of biomass oil decreased when catalyst CoO/HZSM-5 and NiO/HZSM-5 were added, but the content of hydrocarbons in the bio-oil increased by 8.66 and 7.41 percentage points, reaching 25.34% and 24.09%, respectively; the contents of oxygen-containing substances including alcohols, esters, and aldehydes decreased by 9.68 and 12.49 percentage points, respectively, to 31.74% and 30.34%; the contents of nitrogen-containing heterocyclic substances decreased by 5.96 and 12.49 percentage points, respectively, to 32.51% and 35.07%. The catalytic pyrolysis of three amino acids and the intermediate product DKP was studied to further explain the catalytic pyrolysis mechanism of penicillin residue.For the purpose of maximizing the rate, the optimal pyrolysis temperature was also explored.