A kind of recycling method of producing fine powder and waste water by sulfur transfer agent

Abstract

A method for recycling fine powder and waste water produced by a sulfur transfer agent, the method comprising: adding the fine powder of the sulfur transfer agent to the waste water produced by the sulfur transfer agent as a settling aid, and then controlling the pH value of the waste water at 2-6; After the wastewater is subjected to solid-liquid separation treatment twice, the obtained secondary clear liquid is sent to the carrier impregnation tank for reuse, and the obtained heavy phase and / or sediment is ground and sent to the production process of sulfur transfer agent The additives in the glue can be reused in the glue tank. The invention can reuse the fine powder of additives, rare earth elements and solid particles dissolved in waste water, which not only recovers resources, but also reduces environmental pollution.

Description

technical field

[0001] The invention relates to a method for recycling fine powder produced by a sulfur transfer agent and waste water. Background technique

[0002] In the fluidized catalytic cracking (FCC) process, the raw oil and the catalyst are quickly contacted in the riser for catalytic cracking reaction, and the coke generated by the reaction is deposited on the catalyst to cause its deactivation, and the deactivated catalyst enters after stripping The regenerator performs char regeneration. During the regeneration process, the sulfur-containing compounds deposited in the coke are oxidized to generate SOx, which is discharged into the atmosphere along with the regeneration flue gas, causing environmental pollution.

[0003] The use of flue gas SOx transfer aids (also known as sulfur transfer aids or sulfur transfer agents) is the main technical measure to control SOx emissions from regeneration flue gas of FCC units. Its working principle is that in the regenerator...

Images