Dewaxing equipment

Dewaxing equipment

Dewaxing equipment currently uses external cooling, that is, a metal wall is used to separate the coolant and the waxy petroleum fraction. Through the cooling of the coolant, the paraffin in the waxy petroleum fraction is crystallized and attached to the metal wall. , and then use a scraper to scrape off the wax layer, so that the paraffin in the waxy petroleum fraction continues to crystallize and adhere to the metal wall. The problem with this separation method is that the paraffin crystals scraped up with a scraper contain a lot of oil, and the purity of the paraffin is not high. In addition, such cooling equipment is complicated and consumes a lot of energy.

It is to thoroughly mix the coolant (water) and waxy petroleum fractionation to crystallize the paraffin, and then separate the paraffin through a plate and frame filter press.

Internal cooling dewaxing process

1. Fractionate the waxy petroleum from the tank into the internal cooling crystallizer through the raw oil pump. At the same time, pump the coolant (water) into the internal cooling crystallizer through the pump. The two are injected through the nozzle to fill and mix with each other. The paraffin wax It crystallizes after cooling, and then the multi-phase mixture is sent to the plate and frame filter press. The solid phase paraffin is sealed in the plate and frame filter press, and the liquid phase coolant, oil, etc. are filtered by the plate and frame filter press. After it comes out, it enters the sedimentation separation tank. The coolant is discharged through the lower part of the sedimentation separation tank, and the oil is discharged from the upper layer through the pump.

This invention is mainly used for the dewaxing process of normal third-line oil or minus first-line oil for the purpose of producing paraffin products. The equipment of the invention includes a waxy petroleum fraction tank, a pump, an internal cooling crystallizer, a plate and frame filter press, and a sedimentation separation tank. wait. The key equipment is the internal cooling crystallizer, which is an obtuse-shaped closed cavity. There is a layer of sloping filter screen in the middle of the lower sloping cavity. The upper opening of the vertical cavity injects waxy petroleum fractions and coolant inward.

Rights request

1. An internal cooling dewaxing process and equipment. The process is to fractionate the waxy petroleum from the tank into the internal cooling crystallizer through the raw oil pump, and at the same time, pump the coolant (water) into the internal cooling crystallizer through the pump. In the filter, the two are injected and mixed with each other through the nozzle, the wax oil is cooled and crystallized, and then the multi-phase mixture is sent to the plate and frame filter press. The solid phase paraffin is sealed in the plate and frame press, and the liquid The phase coolant, oil, etc. are filtered out by the plate and frame filter press and then enter the sedimentation separation tank. The coolant has a specific gravity and is released through the lower part of the sedimentation separation tank. The oil has a specific gravity and is floating in the upper layer and is discharged by a pump.

2. An internal cooling dewaxing process and equipment. The equipment is composed of a waxy petroleum distillate tank, a pump, a cooler, a plate and frame filter press, and a sedimentation separation tank. The characteristic is that the cooler is an obtuse-angled cavity. The upper part of the vertical chamber has an upper port for injecting waxy petroleum fractions and coolant, and the end of the inclined chamber has a lower port leading to the plate and frame filter press.

3. The internal cooling dewaxing process and equipment is characterized by a layer of inclined filter screen in the inclined cavity of the internal cooling crystallizer.

The internal cooling dewaxing process and equipment is to fractionate the waxy petroleum from the tank into the internal cooling crystallizer through the raw oil pump. At the same time, the coolant is also driven into the internal cooling crystallizer through the pump. The two are injected into each other through the nozzle. The atmosphere is mixed, the paraffin is cooled and crystallized, and then the multi-phase mixture is sent to the plate and frame filter press. The solid phase paraffin is sealed in the plate and frame filter press, and the liquid phase coolant, oil, etc. are passed through the plate and frame filter press. After being filtered by the filter, it enters the sedimentation separation tank. The coolant is discharged through the lower part of the sedimentation separation tank, and the oil is discharged from the upper layer through the pump. This internal cooling dewaxing process is simple, consumes less energy, and has low production costs.