ABSTRACT

Pyrolysis can realise the harmlessness, reduction and resource utilisation of petroleum sludge in a short period. In the present work, a tank bottom sludge (SSOS) and a landing sludge (SLOS) from Shengli Oilfield were used for experimental research. Thermogravimetric testing is used to initially determine the optimal range of pyrolysis temperature. Pyrolysis experiments were performed in a tube furnace reactor. Pyrolysis products were collected and analysed separately. The char yield of SSOS and SLOS were 50% and 70%, respectively. Although there are differences in the oil content of the two types of petroleum sludge, the oil yield remained nearly the same, which were both between 7% and 8%. As the pyrolysis temperature was raised to 500°C, the yield of each product did not change greatly while their composition had obvious changes. High temperature is more conducive to the production of small molecule products. Result showed that pyrolysis treatment of petroleum sludge can effectively recover energy materials in the form of pyrolysis gas and oil. The heating value of char is lower than that of petroleum sludge, which means that char is not suitable for direct use as fuel. Pyrolysis treatment also showed good curing effect on Cr, which reached 85%. However, the solidification effect decreased as pyrolysis temperature increasing. It is necessary to pay attention to the heavy metal contained in char as soil improver. The rich surface structure of char provides evidence to produce high value-added carbon materials.

摘要

热解可在短时间内实现石油污泥的无害化、减量化和资源化利用。本工作采用胜利油田的罐底污泥（SSOS）和着陆污泥（SLOS）进行试验研究。热重测试用于初步确定热解温度的最佳范围。热解实验在管式炉反应器中进行。分别收集和分析热解产物。SSOS 和 SLOS 的焦炭产率分别为 50% 和 70%。两种石油污泥的含油量虽有差异，但出油率基本相同，均在7%～8%之间。随着热解温度升高到500℃，各产物的收率变化不大，但组成有明显变化。高温更有利于小分子产品的生产。结果表明，石油污泥的热解处理可以有效地回收热解气和油形式的能源材料。炭的热值低于石油污泥，这意味着炭不适合直接用作燃料。热解处理对Cr也表现出良好的固化效果，达到85%。然而，随着热解温度的升高，凝固效果下降。作为土壤改良剂，炭中所含的重金属是需要注意的。炭丰富的表面结构为生产高附加值的碳材料提供了证据。结果表明，石油污泥的热解处理可以有效地回收热解气和油形式的能源材料。炭的热值低于石油污泥，这意味着炭不适合直接用作燃料。热解处理对Cr也表现出良好的固化效果，达到85%。然而，随着热解温度的升高，凝固效果下降。作为土壤改良剂，炭中所含的重金属是需要注意的。炭丰富的表面结构为生产高附加值的碳材料提供了证据。结果表明，石油污泥的热解处理可以有效地回收热解气和油形式的能源材料。炭的热值低于石油污泥，这意味着炭不适合直接用作燃料。热解处理对Cr也表现出良好的固化效果，达到85%。然而，随着热解温度的升高，凝固效果下降。作为土壤改良剂，炭中所含的重金属是需要注意的。炭丰富的表面结构为生产高附加值的碳材料提供了证据。然而，随着热解温度的升高，凝固效果下降。作为土壤改良剂，炭中所含的重金属是需要注意的。炭丰富的表面结构为生产高附加值的碳材料提供了证据。然而，随着热解温度的升高，凝固效果下降。作为土壤改良剂，炭中所含的重金属是需要注意的。炭丰富的表面结构为生产高附加值的碳材料提供了证据。