Wastewater and waste gas whole-process management and control method for refinery startup, shutdown, inspection and maintenance

Abstract

The invention belongs to the technical field of petrochemical industry environmental protection management, and discloses a wastewater and waste gas whole-process management and control method for refinery startup, shutdown, inspection and maintenance. The method comprises the following steps: (1) determining wastewater and waste gas sources in refinery startup, shutdown, inspection and maintenance processes; (2) analyzing components and compositions of wastewater and waste gas in the refinery startup, shutdown, inspection and maintenance processes; and (3) treating the wastewater and the waste gas. According to the method, wastewater generation reasons and generation links are analyzed from the source, and classified management and control and graded treatment are performed, so that the enterprise environmental protection management level is improved, and the enterprise environmental risk is reduced.

Description

technical field [0001] The invention belongs to the technical field of heat supply, and in particular relates to a method for controlling the whole process of waste water and waste gas used for start-up, shutdown, inspection and maintenance of a refinery. Background technique [0002] After a period of operation (generally 3-5 years), the production equipment of domestic oil refineries needs to be shut down for major maintenance, cleaning of towers, containers and other equipment, replacement of corrosion equipment, and calibration of measuring instruments to ensure the safety of the next cycle Smooth reproduction. In the shutdown stage, dozens of production devices often stop at the same time. When cooling, reducing pressure, returning materials, venting, and equipment cleaning, a large amount of waste water containing oil, solvent, alkali, and high-concentration organic matter will be generated in a short period of time. Pollutants The concentration fluctuation range is l...

AI Technical Summary

Problems solved by technology

In the shutdown stage, dozens of production devices often stop at the same time. When cooling, reducing pressure, returning materials, venting, and equipment cleaning, a large amount of waste water containing oil, solvent, alkali, and high-concentration organic matter will be generated in a short period of time. Pollutants The concentration fluctuation range is large, it is difficult to ensure the total amount of sewage and pollutant concentration load requirements of the sewage treatment plant, and it is easy to have an impact on the sewage field, affecting the final standard discharge

In addition, during the process of device cooking and pipeline purging, unreasonable cooking and purging processes and lax on-site management lead to odor leakage, and environmental pollution incidents are prone to occur