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Do you know the Application in Distillation Tower Petrochemical Industry?

Jul 09, 2020

As a Hydrogen Peroxide Manufacturing Plant, share with you.

Process

First, determine the plan. When determining the specific device flow, it is necessary to pay attention to the three-stage vaporization method used in the entire flow, so as to realize the rational setting of the initial distillation tower, the atmospheric pressure tower, and the vacuum tower.

Distillation Technology

Distillation Technology

Second, determine the number of vaporization sections. Comprehensively referring to the corresponding characteristics of the crude oil of the enterprise, it is recommended to use the initial distillation tower equipment, which is designed to better adapt to changes in various types of conditions. Among crude oil materials, high-boiling fractions with a temperature above 350 degrees Celsius can be regarded as the main raw materials required for the corresponding equipment of catalytic cracking, distillate lubricating oil and hydrocracking. After the analysis of the above reasons, it is necessary to implement the effective setting of the decompression tower equipment.

Third, choose a heat exchange strategy. Combining the actual situation of the company's oil refining and relevant experience, and integrating various factors, the corresponding process content can be roughly obtained. Dehydration and desalination measures are taken for crude oil at 40 to 50 degrees Celsius, and then heat exchange is completed in two ways; the gasoline component at the top of the overhead tower is condensed and cooled, part of which will enter the top of the tower and play a good reflux effect, and the other part After the cooling is continued, it is output by the device. It should be noted here that, whether to use a two-stage vaporization process for atmospheric distillation, a comprehensive analysis of relevant factors should be performed according to specific conditions. If the crude oil contains many light fractions, the temperature of the crude oil will increase after a series of heat exchanges. Vaporization of the distillate will cause the pipeline pressure to drop. As a result, the outlet pressure of the crude oil pump will increase, and the pressure resistance of the heat exchanger should also increase.

Energy saving measures

Generally speaking, an oil refinery is a production entity with huge energy consumption. Atmospheric and vacuum distillation equipment is one of the most prominent equipment. Therefore, to fully realize the optimal use of energy and minimize the energy consumption of the device as much as possible has become a key issue in the production design process, and therefore more reasonable energy-saving measures must be adopted. First, optimize and improve the process. Atmospheric and vacuum distillation equipment is recommended to use the initial distillation column process, which aims to effectively reduce the heating furnace load; in order to fully reduce the cooling load, it is required to use a two-stage condensation reflux process at the top of the atmospheric column; The circulating reflux of the pressure tower can realize the optimization and improvement of the heat flow heat exchange temperature, and reduce the condensing and cooling load on the top of the tower as much as possible, thereby improving the corresponding heat recovery rate of the equipment. Second, optimize the operation of the heating furnace equipment to maximize the use efficiency; recycle the low-temperature waste heat generated; select new heat exchange equipment to fully enhance the actual heat exchange efficiency; optimize and improve the steam consumption situation as much as possible, Reduce overall consumption.

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