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

Energy-saving rectifying device for integrating energy in rectifying tower sequence and method

A technology of internal energy and rectification tower, applied in the field of rectification, can solve the problems of large diameter of tower body, high operating cost, large tower height, etc., and achieve the effect of broad industrial application prospect, saving operating cost and great economic benefit.

Inactive Publication Date: 2011-02-09
TIANJIN UNIV
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the existing multi-component separation conventional distillation sequence such as figure 1 As shown, when separating difficult-to-separate systems, the number of theoretical plates required is large, resulting in a large height of the tower; the operating reflux ratio of the required tower is large, resulting in a large diameter of the tower body, and the reboiler at the bottom of the tower The required heat load and the condensation load required by the overhead condenser are larger, so the energy consumption of the tower is higher and the operating cost is also higher

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 rectifying device for integrating energy in rectifying tower sequence and method
  • Energy-saving rectifying device for integrating energy in rectifying tower sequence and method
  • Energy-saving rectifying device for integrating energy in rectifying tower sequence and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment one (BTX system separation)

[0034] Situation 1: BTX system separation, using the process described in the present invention, such as figure 2 shown. Feed rate 1000kg / h, feed composition: benzene, 33.3% (wt%), toluene, 33.3% (wt%), xylene, 33.4% (wt%), feed heat state is bubble point feed. The number of theoretical plates in the distillation column of light components is 40, and the number of theoretical plates in the rectification column section and stripping column section of the light component refining column is 20 respectively. The operating pressure of the light-ends distillation tower and the light-ends refining tower rectification column section is normal pressure, and the operating pressure of the light-ends refining tower stripping column section is 0.3 atm. The total internal heat exchange capacity between the rectification column section and the stripping column section of the light end refining tower is 57kW. The output of the bottom product...

Embodiment 2

[0056] Embodiment two (PCM system separation)

[0057] Situation 1: PCM system separation, using the process described in the present invention, such as figure 2shown. Feed amount 1000kg / h, feed composition: n-pentane, 33.3% (wt%), cyclopentane, 33.3% (wt%), 2-methylpentane, 33.4% (wt%), feed heat Condition is bubble point feed. The number of theoretical plates in the distillation column of light components is 60, and the number of theoretical plates in the rectification column section and stripping column section of the light component refining column is 30 respectively. The operating pressure of the light-ends distillation tower and the light-ends refining tower rectification column section is 1.5 atm, and the operating pressure of the light-ends refining tower stripping column section is 1 atm. The total internal heat exchange capacity between the rectification column section and the stripping column section of the light end refining tower is 203kW. The output 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 energy-saving rectifying device for integrating energy in a rectifying tower sequence and a method, wherein the device comprises a light component evaporating tower, a steam flow distributor, a steam mixer, a central condenser, a liquid flow distributor, a rectifying tower section of a light component refining tower, a stripping tower section of the light component refining tower, a reducing valve, and a flash vaporization vessel, wherein the light component evaporating tower does not have a ceiling condenser and is used for supplying high pressure steam to the rectifying tower section of the light component refining tower; the reducing valve and the flash vaporization vessel are arranged between the rectifying tower section of the light component refining tower and the stripping tower section of the light component refining tower; the internal heat exchange between the two tower sections not only can reduce the hot load consumption at the bottom of the stripping tower section of the light component refining tower, but also can reduce the condensing load consumption at the top of the rectifying tower section of the light component refining tower. Compared with the conventional multi-component rectifying and separating system, the device in the invention can greatly reduce the total energy consumption of the entire rectifying tower system, save the operation cost, and reach the purpose of saving energy and increasing efficiency.

Description

technical field [0001] The invention relates to the technical field of rectification and a rectification tower system, in particular to an energy-saving rectification device and method for energy-integrated internal energy of a rectification tower sequence. Background technique [0002] Distillation is the most widely used industrial separation method in contemporary times, and has been widely used in chemical industry, petroleum, food, light industry and other industrial sectors. Although the development of science and technology, new separation technology has begun industrial application, but in a certain period of time, the dominance of rectification technology cannot be shaken. [0003] Distillation separation technology is mature and easy to industrialize, but the disadvantage is that it consumes a lot of energy. For traditional distillation and separation, the input energy consumption accounts for more than 40% of the total industrial energy consumption, which cannot ...

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
IPC IPC(8): B01D3/14B01D3/32
Inventor 袁希钢闫兵海刘春江罗祎青许良华曾爱武唐忠利
Owner TIANJIN UNIV
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