Fractionation device in petroleum coke production process

Abstract

The invention relates to the technical field of petroleum fractionation, and in particular, relates to a fractionation device in a petroleum coke production process, wherein the fractionation device comprises a first rectifying tower and a second rectifying tower; the top of the second rectifying tower is provided with a second heavy component branch pipe and a second light component branch pipe, and one end of the second heavy component branch pipe and one end of the second light component branch pipe are sleeved with spiral heat conduction pipes; a first heavy component branch pipe is mounted at the top of the first rectifying tower, one end of the first heavy component branch pipe is connected with a first heat exchange mechanism, and an auxiliary mechanism is arranged on one side of a uniform mixing box. Fluid in the uniform mixing box can be fully stirred and sloshed, so that the fluid in the pipeline can be uniformly mixed at a temperature, the temperature difference between a second heat exchange pipe and the spiral heat conduction pipes caused by too high temperature of the outer layer of the pipeline is avoided, the overall temperature of the uniformly-mixed fluid is uniformly mixed, the temperature difference between the second heat exchange pipe and the spiral heat conduction pipes is enlarged, then the secondary heat exchange efficiency is improved, and sufficient absorption of heat in the second rectifying tower is achieved.

Description

technical field [0001] The invention relates to the technical field of petroleum fractionation, in particular to a fractionation device in the petroleum coke production process. Background technique [0002] Petroleum coke is the vacuum residue of petroleum. It is a black solid coke produced by cracking and coking at 500-550°C in a coking device. Its appearance is a black or dark gray honeycomb structure, and the pores in the coke block are mostly elliptical. It is generally considered to be an amorphous carbon body, or a highly aromatized polymer carbide, which contains a needle-like or granular structure of tiny graphite crystals, and has a high carbon-hydrogen ratio. , Petroleum coke needs to use fractionation equipment during production. However, the existing fractionation equipment has a single function, which is not convenient for collecting and recycling heat energy, and there is a large amount of waste of resources, which increases production costs. [0003] A Chine...

AI Technical Summary

Problems solved by technology

[0002] Petroleum coke is the vacuum residue of petroleum. It is a black solid coke produced by cracking and coking at 500-550°C in a coking device. Its appearance is a black or dark gray honeycomb structure, and the pores in the coke block are mostly elliptical. It is generally considered to be an amorphous carbon body, or a highly aromatized polymer carbide, which contains a needle-like or granular structure of tiny graphite crystals, and has a high carbon-hydrogen ratio. , Petroleum coke needs to use fractionation equipment during production. However, the existing fractionation equipment has a single function, which is not convenient for collecting and recycling heat energy. There is a large amount of waste of resources, which increases production costs.

[0003] A Chinese utility model patent with publication number CN212532870U to solve the above problems discloses a fractionation device in the production process of petroleum coke. The device realizes the collection and utilization of heat in the pipeline through the heat exchange seat provided, reducing the waste of resources, but in In practical applications, the following problems are found: when exchanging heat, the greater the temperature difference between the two media, the better the heat exchange effect. Although the fluid in the pipeline is flowing, the fluid in the pipeline still has the peripheral temperature after the initial heat exchange. Fast, the temperature is high, and the temperature of the fluid near the center of the pipe is low, and the temperature distribution is uneven, resulting in a small temperature difference between the heat transfer media and a poor heat transfer effect.

Images