Energy-saving utilization system of delay coking unit

A technology of delayed coking and venting tower, applied in the field of energy utilization, can solve the problems of large water consumption, poor utilization of thermal energy, low attention, etc., and achieves the effect of solving high energy consumption, easy implementation and reliable technology

Active Publication Date: 2017-02-22
BEIJING HUAFU ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in PetroChina, Sinopec and local refineries, the energy utilization of the vent tower system in the delayed coking unit has not been paid much attention. For the lar

Method used

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  • Energy-saving utilization system of delay coking unit

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] The energy-saving utilization system of the delayed coking unit of the present invention, its preferred specific embodiment is:

[0019] Including a venting tower, a steam generator is arranged at the bottom of the venting tower, a heat exchange tube is arranged in the steam generator, and the bottom oil of the venting tower is connected to the heat exchange tube through a tower bottom pump, The heat exchange tube is provided with a medium water inlet and a steam outlet.

[0020] The steam outlet is connected with the steam pipe network of the whole plant.

[0021] The medium water is deoxygenated water.

[0022] Three parameters of double liquid level selection, steam flow and feed water flow are used for liquid level control.

[0023] The energy-saving utilization system of the delayed coking unit of the present invention solves the problem of high energy consumption of the venting tower system in the existing device, and at the same time by-produces high value-adde...

Example Embodiment

[0027] Specific examples:

[0028] like figure 1 , figure 2 As shown, in a delayed coking production unit, after the bottom oil of the venting tower is discharged from the venting tower bottom pump 2, it enters the steam generator at the bottom of the venting tower through the N1 nozzle, and the deoxygenated water enters the steam generator from the N3 nozzle at the bottom of the shell side. After heat exchange between the two, the cooled bottom oil of the venting tower exits through the N2 nozzle and is divided into two parts: one part is returned to the top of the venting tower 1 as a reflux, and the oil and gas in the cooling tower to maximize the recovery of gas oil in; part of the out-of-bounds area as bottoms. The deoxygenated water absorbs a lot of heat and is gasified to generate saturated steam of 1.0MPa, which exits the steam generator through the N4 nozzle, and is integrated into the steam pipe network of the whole plant for use by devices and users.

[0029] Th...

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Abstract

The invention discloses an energy-saving utilization system of a delay coking unit, comprising an empty tower, wherein the tower bottom of the empty tower is provided with a steam generator; a heat exchange pipe is arranged in the steam generator, and the tower bottom oil of the empty tower is connected with the heat exchange pipe through the tower bottom pump, and the heat exchange pipe is provided with a medium water inlet and a steam outlet; the steam outlet is connected with a steam pipe network in the whole factory. The energy-saving utilization system solves the problem of high energy consumption of the empty tower system in the existed device; meanwhile, the system also produces the steam with high additional value. The technology is reliable, reasonable, high-efficient and easy to practice; the tracing heat of the device and the pipeline in the steam supply device and use of other devices can be happened, the materials (products) are cooled; thus the purpose of recycling oil product is reached.

Description

technical field [0001] The invention relates to an energy utilization technology of a vent tower system in a delayed coking device, in particular to an energy-saving utilization system of a delayed coking unit. Background technique [0002] Delayed coking unit is a thermal processing technology of heavy oil, and it is a main means of lightening heavy oil in refineries and increasing the yield of light oil in refineries. The delayed coking process usually uses heavy oil, residual oil, or even asphalt as raw materials, and undergoes deep thermal cracking and condensation reactions at high temperatures (about 500°C) to produce rich gas, naphtha, diesel, wax oil, and coke. It is one of the main methods of deep processing of residual oil in the world, and its processing capacity accounts for one-third of the residual oil processing capacity. [0003] The so-called delay means that the coking oil is rapidly heated to the coking reaction temperature through the heating furnace, bu...

Claims

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Application Information

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IPC IPC(8): C10G9/00F22B1/16
CPCC10G9/005C10G2300/4081F22B1/16
Inventor 张彩霞肖茂金
Owner BEIJING HUAFU ENG
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