Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for pre-processing raw materials for catalytic reforming device and device thereof

A catalytic reforming and pretreatment technology, which is applied in the direction of naphtha catalytic reforming, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problem of high energy consumption of the stripping tower, achieve less investment increase and reduce heat load , the effect of enhanced operational flexibility

Inactive Publication Date: 2013-04-17
SOUTH CHINA UNIV OF TECH +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The primary purpose of the present invention is to overcome the shortcoming of the large energy consumption of the stripping tower of the catalytic reforming unit in the prior art, and provide a method for the pretreatment of the raw material of the catalytic reforming unit

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for pre-processing raw materials for catalytic reforming device and device thereof
  • Method for pre-processing raw materials for catalytic reforming device and device thereof
  • Method for pre-processing raw materials for catalytic reforming device and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The technical process of the present embodiment stripping tower is as figure 2 As shown, compared with the comparative example process, the following improvements have been implemented:

[0027] (1) Increase the cold feed line

[0028] One end of the cold feed line 9 is connected with the liquid phase outlet of the pre-hydrogenation reaction product gas-liquid separation tank, and the other end is connected with the stripping tower from the top to the bottom (i.e. the cold reflux return tower of the prior art). port) connection;

[0029] (2) Implementation of cold and hot feeding

[0030] The feed from the stripper tank 2 (43°C, 2.0MpaG, 78.8t / h) of the pre-hydrogenation reaction product is controlled by the flow rate to allow the 15t / h, 43°C pre-hydrogenation reaction product to pass through the newly added cooling The feed line 9 enters the original cold reflux feed port of the stripper by pressure, and replaces the cold reflux completely; while the remaining 63.8...

Embodiment 2

[0042] The technical process of the present embodiment stripping tower is as image 3 As shown, compared with the comparative example process, the following improvements have been implemented:

[0043] (1) Increase the cold feed line

[0044] One end of the cold feed line 10 is connected to the liquid phase outlet of the pre-hydrogenation reaction product gas-liquid separation tank, and the other end is connected to the first tray from the top to the bottom of the stripper;

[0045] (2) Implementation of cold and hot feeding

[0046] The feed to the stripper from the pre-hydrogenation reaction product liquid separation tank 2 (43°C, 2.0MpaG, 78.8t / h), through flow control, let the 10t / h, 43°C pre-hydrogenation reaction product pass through the newly added The cold feed line 10 is automatically pressed into the original cold reflux inlet of the stripper to replace the 14.7t / h cold reflux; while the remaining 68.8t / h pre-hydrogenation reaction products continue to follow the e...

Embodiment 3

[0059] The technical process of the present embodiment stripping tower is as image 3 As shown, compared with the comparative example process, the following improvements have been implemented:

[0060] (1) Increase the cold feed line

[0061] With embodiment 2;

[0062] (2) Implementation of cold and hot feeding

[0063] The feed to the stripper from the pre-hydrogenation reaction product liquid separation tank 2 (43°C, 2.0MpaG, 78.8t / h), through flow control, let the 5t / h, 43°C pre-hydrogenation reaction product pass through the newly added The cold feed line 10 is self-pressed into the original cold reflux inlet of the stripper to replace part of the cold reflux 9.7t / h; while the remaining 73.8t / h reaction product continues to follow the existing process and the bottom oil d of the stripper through stripping Tower feed / bottom heat exchanger 3 enters the 11th plate of the stripper after heat exchange;

[0064] (3) Reduce cold return flow

[0065] Since there is 5t / h cold...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for pre-processing raw materials for a catalytic reforming device and a device thereof. The method of the invention divides the pre-hydrogenation reaction product obtained from a pre-hydrogenation reaction product gas-liquid separating pot into two parts. One part is directly used as a first tower plate of a cold feed auto-feeding stripping tower, from up to down.The other part enters into the stripping tower through the process as same as the prior art. The cold feed directly enters into the first tower plate of the auto-feeding stripping tower, so the cold reflowing volume on the top of the stripping tower is correspondingly reduced. In this way, the separating effect is ensured, the internal recycle is reduced and the energy consumption is lowered. Thedevice using the method is provided with a cold feed pipeline on the stripping tower, wherein one end of the cold feed pipeline is connected to a liquid outlet of the pre-hydrogenation reaction product gas-liquid separating pot while the other end is connected to the first tower plate of the stripping tower. The investment of the device is lowered. Only one cold feed pipeline is added and the stripping tower and the tower plate are never changed, so the energy consumption is obviously reduced and the device is easily popularized.

Description

technical field [0001] The invention belongs to the field of petroleum processing, and in particular relates to a method and a device for pretreating raw materials of a catalytic reforming device. Background technique [0002] The raw material pretreatment of the catalytic reforming unit includes pre-fractionation and refining: pre-fractionation is to remove the head and tail of the naphtha raw material through distillation, and cut the reforming raw material with a suitable boiling range; Impurities harmful to the reforming catalyst in the reforming raw material after fractionation make the impurity content reach the limit requirement. The basic process of raw material pretreatment of catalytic reforming unit is as follows: the raw material naphtha from atmospheric and vacuum devices is pre-fractionated first, and then enters the pre-hydrogenation heating furnace, and then enters the pre-hydrogenation reactor after being heated to 280-320°C , under the conditions of 2.0-2....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/08C10G35/04
Inventor 李国庆高聃张忠洋
Owner SOUTH CHINA UNIV OF TECH