Check patentability & draft patents in minutes with Patsnap Eureka AI!

Methanol rectification method and methanol rectification system

A methanol rectification system and methanol rectification technology, applied in the field of methanol rectification process methods and devices, can solve the problems of high cost and high energy consumption of methanol rectification process, and achieve the effect of reducing the production and disposal volume

Active Publication Date: 2021-07-09
CHINA ENERGY GRP NINGXIA COAL IND CO LTD
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a methanol rectification method and a methanol rectification system in order to overcome the problems of high energy consumption and high cost of the methanol rectification process in the prior art without changing the existing device

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
  • Methanol rectification method and methanol rectification system
  • Methanol rectification method and methanol rectification system
  • Methanol rectification method and methanol rectification system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0148] Embodiment 1-3 is in figure 2 Carried out in the shown three-tower methanol rectification system, in the methanol rectification system,

[0149] The pre-distillation tower T-1001 has four sections of packing, and the feed port is set on the upper part of the second packing; the thermosiphon reboiler heated by low-pressure steam provides heat to the methanol solution at the bottom of the pre-distillation tower T-1001;

[0150] The pressurization tower T-1002 has four sections of packing, and the feed port is set above the fourth section of packing; the thermosiphon reboiler heated by low-pressure steam provides heat to the methanol solution at the bottom of the pressurization tower T-1002;

[0151] The upper section of the atmospheric tower T-1003 is a packed tower with five sections of packing in total, and the lower section is a valve tower with 16 trays in total, and the feed port is set above the fifth section of packing in the tower;

[0152] The steps of the meth...

Embodiment 4

[0173] Example 4 in figure 1 The shown four towers are carried out in the methanol rectification system converted to three towers, and in the methanol rectification system:

[0174] The pre-distillation tower T-1001 has four sections of packing, and the feed port is set on the upper part of the second packing; the thermosiphon reboiler heated by low-pressure steam provides heat to the methanol solution at the bottom of the pre-distillation tower T-1001;

[0175] The pressurization tower T-1002 has four sections of packing, and the feed port is set above the fourth section of packing; the thermosiphon reboiler heated by low-pressure steam provides heat to the methanol solution at the bottom of the pressurization tower T-1002;

[0176] The upper section of the atmospheric tower T-1003 is a packed tower with five sections of packing in total, and the lower section is a valve tower with 16 trays in total, and the feed port is set above the fifth section of packing in the tower;

...

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 provides a methanol rectification method and a methanol rectification system. The method comprises the following steps: (1) carrying out primary rectification on a crude methanol raw material to obtain primary rectification liquid and first rectification gas; (2) carrying out secondary rectification on the first rectification liquid to obtain second rectification liquid and second rectification gas; (3) performing secondary condensation on the second rectification gas to obtain a second condensate, storing a part of the second condensate as a refined methanol product, performing tertiary rectification on the second rectification liquid to obtain third rectification gas, third rectification liquid and wastewater; and (4) performing tertiary condensation on the third rectification gas to obtain third condensate, and storing a part of the third condensate as refined methanol, wherein the third rectification liquid is intermittently extracted when the temperature of the third rectification is greater than or equal to 68 DEG C, and when the temperature of the tertiary rectification is less than or equal to 63 DEG C, extraction of the fusel oil is stopped. The method can reduce the loss of steam, the electric energy of a machine pump and the like, and the purposes of reducing cost and improving efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of a methanol rectification process and device, in particular to a methanol rectification method and a methanol rectification system capable of reducing costs and increasing efficiency. Background technique [0002] Methanol is an important organic chemical raw material and new energy fuel, and has a wide range of uses in the fields of chemical industry, light industry and clean energy. In the synthesis process of methanol, the energy consumption of the refining process of crude methanol is one of the key factors affecting the production cost of methanol. [0003] At present, most alcohol rectification devices use four-tower devices, that is, pre-rectification tower T1001, pressurization tower T1002, atmospheric tower T1003 and stripping tower T1004. First, the pre-rectification tower T1001 removes light components, and then the Crude methanol is rectified sequentially through pressurized tower T1002 and at...

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 Applications(China)
IPC IPC(8): C07C29/80C07C31/04
CPCC07C29/80C07C31/04
Inventor 马永贤乃国星张国敏闫峰门小勇周建成袁生斌王波何彬
Owner CHINA ENERGY GRP NINGXIA COAL IND CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com