Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Energy saving method and equipment for rectification separation

A rectification separation and equipment technology, which is applied in the field of energy-saving rectification separation and equipment, can solve the problems of consuming the heat load of the condenser, the heat load of the reboiler, inconvenient start-up operation, and no thermal coupling, etc., so as to reduce the heat load of condensation, The effect of saving heat removal heat load and reducing comprehensive energy consumption

Active Publication Date: 2009-05-13
PETROCHINA CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the typical single-column rectification and two-column rectification technologies in series all use standard condensers and reboilers without "thermodynamic coupling" and need to consume the corresponding heat load of the condenser and reboiler. There are needs and possibilities for improvement
[0005] At present, "intermediate reboiler" technology is used in single-column distillation, but its heat source comes from other parts, not from the rectification column system itself, and it is inconvenient to start and operate, so it needs to be improved
[0006] At present, in the single-column distillation, there is a "double-column double-pressure parallel condenser / reboiler thermal coupling technology", but this method will bring inconvenience to the operation, because an almost identical column is connected in parallel, so that The operation is complicated; and because of the "thermal coupling", the lower pressure "condenser / reboiler thermal coupling" column will bring inconvenient operation
[0007] At present, in the double-column methanol rectification, the technology of "double-column double-pressure series condenser / reboiler thermodynamic coupling" is used, but it is not the technology of "condenser / intermediate reboiler thermodynamic coupling", and the "additional Regulate reboiler", which brings inconvenience to the operation of the lower pressure "condenser / reboiler thermodynamic coupling" column
[0008] At present, in the typical two-column rectification in series, there are "two-tower, double-pressure series condenser / reboiler thermodynamic coupling" technology, but "two-column, double-pressure series, condenser / intermediate reboiler thermodynamic coupling" technology is not used. coupling" technology and "additional regulation reboiler" technology

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
  • Energy saving method and equipment for rectification separation
  • Energy saving method and equipment for rectification separation
  • Energy saving method and equipment for rectification separation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In this embodiment, the single-column rectification column is changed to double-column double-pressure series connection, thermal coupling of condenser and intermediate reboiler, and additional adjustment of reboiler. The flow chart is shown in the appendix image 3 .

[0032] It is composed of two rectification towers A and B, the bottom of tower A (1) is connected with a reboiler (3), the outlet at the bottom of the tower is connected with the inlet of tower B (2), and the outlet at the top of tower A is connected with The intermediate reboiler (4) is connected, the intermediate reboiler is connected with a reflux tank (8), the reflux tank is connected with the top inlet of the A tower through the reflux pump (6), and the intermediate reboiler is connected with the lower part of the B tower. One end of the adjustable reboiler (5) is connected to the bottom of the B tower, and the other end is connected to the still liquid outflow pipeline at the bottom of the B tower....

Embodiment 2

[0035] In this embodiment, the double-tower rectification tower is changed to a double-tower double-pressure series connection, a thermal coupling between the condenser and the intermediate reboiler, and an additional adjustment of the reboiler. When the feed is in the A tower, the flow diagram is shown in the appendix. Figure 4 , technological process is as embodiment 1, and fresh raw material first enters A tower, and tower top steams product I, removes heat through the condenser of B tower and intermediate reboiler, condenses, enters reflux tank buffer, and part reflux returns tower top, The remaining part is produced as product I. The tower is equipped with a typical reboiler, and the kettle liquid is extracted and enters the B tower. The light product II is evaporated from the top of the B tower. The classic condenser removes heat and condenses, and enters the reflux tank. Buffering, part of the reflux returns to the top of the tower, and the rest is also extracted as pro...

Embodiment 3

[0037] In this embodiment, the double-tower rectification tower is changed to a double-tower double-pressure series connection, a condenser and an intermediate reboiler are thermally coupled and an additional adjustment of the reboiler process is carried out. The process equipment is the same as in Example 1. When the feed is in the B tower, See attached Figure 5, the fresh raw material first enters the B tower, and the product I is steamed from the top of the tower, which is removed and condensed by the typical condenser of the B tower, and enters the reflux tank for buffering, and part of the reflux returns to the top of the tower, and the rest is extracted as the product I. An additional adjustment reboiler is used to ensure the normal operation of the B tower. The bottom liquid of the tower is taken out and enters the A tower. The light product II is distilled from the top of the A tower, and the heat is removed through the condenser and the intermediate reboiler of the B ...

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 relates to an equipment and method for saving energy conservation in selective evaporation. The equipment involves A and B rectification tower in series. The bottom of Tower A connects the reboiler. The export of Tower A connects the import of Tower B. The export of Tower A on the top connects middle reboiler, reflux accumulator, reflux pump. The bottom of Tower B connects middle reboiler. The top of Tower B connects condenser, reflux accumulator, reflux pump. The heat of condensation of Tower A is as the load of middle reboiler when connected Tower B. Part of the heat of condensation reflows to the tower and other is as the product. In Tower B, the light product boils over from the top. Some reflows to tower and other is as the product. The heat is from condenser and middle reboiler and attaches the light-load adjustment reboiler to achieve connecting in series, the mightiness coupling between condenser and middle reboiler. The design is reasonable; the effect on saving energy is obvious.

Description

Technical field: [0001] The invention relates to an energy-saving rectification separation method and equipment for rectification separation. Background technique: [0002] At present, a typical single-column distillation schematic flow chart is attached. figure 1 . The raw materials are separated through the rectification tower, the top product is obtained from the top of the tower, and the bottom product is obtained from the bottom of the tower. [0003] At present, the schematic flow chart of the typical two-column rectification in series is shown in the appendix figure 2 . The raw material enters the rectification tower I, and the tower top product I is obtained from the top of the tower, and the tower bottom liquid enters the rectification tower II, and another tower top product II is obtained from the top of the rectification tower II, and the tower bottom is obtained from the tower bottom product. [0004] At present, the typical single-column rectification and ...

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): B01D3/14
Inventor 陈振京曹坚杨维军陈伟刘一心
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com