A method for preparing ceramsite from oily sludge

Abstract

The invention discloses a method for preparing ceramsite from oily sludge, which comprises (1) selecting raw materials and pretreating the raw materials; (2) stirring the raw materials once to obtain a mixture; (3) aging the mixture processing to obtain an aged mixture; (4) adding the aged mixture to a granulator to obtain raw ceramsite; (5) drying the raw ceramsite; (6) calcining the dried raw ceramsite; 7) cooling the calcined ceramsite to obtain the finished ceramsite. The present invention provides a method for preparing ceramsite from oily sludge, which not only does not require enterprises to carry out environmental protection treatment on oily sludge, but also directly uses the oily sludge as a raw material to prepare ceramsite, effectively reducing the amount of oily sludge. At the same time, oily sludge can be used as a production resource to complete the production of ceramsite, which brings great economic benefits and promotes the development of enterprises and industries.

Description

technical field [0001] The invention belongs to the field of resource utilization of solid waste, and specifically refers to a method for preparing ceramsite by using oily sludge. Background technique [0002] With the deepening of human understanding of the environment, the view that everyone is responsible for protecting the environment has been deeply rooted in the hearts of the people, and environmental resource issues are closely related to the national economy. In recent years, the output of various solid wastes has been increasing, which has caused varying degrees of pollution to the environment while occupying a large amount of land resources. The causes and types of solid waste are as follows: [0003] 1. With the continuous development of the oil and natural gas exploration industry, the oily sludge, drilling cuttings and mud produced in the process of oil and natural gas exploitation have become more and more serious to the environment. The output of oily sludge...

AI Technical Summary

Problems solved by technology

Oily sludge contains clay, weighting materials, various chemical treatment agents, sewage, dirty oil and drill cuttings, etc. The main chemical components that endanger the environment include hydrocarbons, salts, various polymers, heavy metal ions, barite and asphalt, etc. , these pollutants have complex composition and high stability, which makes the treatment of oily sludge more difficult

[0004] 2. Of the large amount of sludge produced in my country every year, about 38 million tons have not been properly settled. The situation is not optimistic. Sludge disposal has become an important bottleneck restricting the healthy development of sewage treatment plants and industrial production.

[0011] However, in the "National Hazardous Waste List (Revised Draft)" (draft for comments), HW08 waste mineral oil and waste containing mineral oil, 071-001-08 oily sludge and oil feet produced by petroleum mining and refining, 071- 002-08 Drilling mud prepared with mineral oil as continuous phase is used for drilling cuttings and waste drilling mud produced in oil exploitation and 072-001-08 Drilling mud prepared with mineral oil as continuous phase is used for drilling rock produced in natural gas exploitation Cuttings and waste drilling mud also belong to oily sludge, and the treatment of this oily sludge is not considered in the above patents

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