Tail gas treatment device for cyclohexane oxidation system and treatment method thereof

A tail gas treatment and tail gas oxidation technology, which is applied in the field of cyclohexane oxidation to prepare cyclohexanol and cyclohexanone, can solve the problems of low heat energy utilization rate, difficult removal of polymers, poor energy saving effect, etc.

Active Publication Date: 2012-04-25
CHONGQING HUAFON CHEM +1
View PDF6 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Above-mentioned application heat energy utilization rate is low, and energy-saving effect is poor; What is more serious simultaneously is that its operation safety is poor, and this is because the desorption gas used in the desorption process is the tail gas in the temperature swing adsorption process, due to the presence of cyclohexane, cyclohexane Organic substances such as alco

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
  • Tail gas treatment device for cyclohexane oxidation system and treatment method thereof
  • Tail gas treatment device for cyclohexane oxidation system and treatment method thereof
  • Tail gas treatment device for cyclohexane oxidation system and treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Such as figure 1 As shown, the cyclohexane oxidation tail gas purification device includes:

[0067] The buffer tank 1 is used to store and buffer the tail gas entering the first temperature swing adsorption tower, and its inlet is connected to the tail gas pipeline to be treated.

[0068] The first temperature swing adsorption tower 81 is filled with adsorbent; the inlet pipeline of the first temperature swing adsorption tower 81 has three branches, wherein the first inlet pipeline 21 is connected to the outlet of the buffer tank 1 through a control valve; the second inlet pipeline 22 The first interface of the first heater 41 is connected through a control valve, and the third inlet pipeline 23 is connected with the first branch a of the inert gas pipeline through a control valve. The second branch b of the inert gas pipeline is connected to the second interface of the first heater 41 through a control valve. There are five outlet pipelines of the first temperature...

Embodiment 2

[0087] Such as figure 2 As shown, the cyclohexane oxidation tail gas purification device further includes a second temperature swing adsorption tower 82 , a second heater 42 and a second cooler 52 on the basis of Embodiment 1.

[0088] Wherein, the first temperature swing adsorption tower 81 is connected in parallel with the second temperature swing adsorption tower; the inlet pipeline of each temperature swing adsorption tower also includes the fourth inlet pipeline 24 and the fifth inlet pipeline 25, and the outlet pipeline of each temperature swing adsorption tower also includes A sixth outlet line 36 and a seventh outlet line 37 are included. The fourth inlet pipeline 24 is connected to the first interface of the second heater 42 through a control valve, and the sixth outlet pipeline 36 is connected to the second interface of the second heater 42 through a control valve. The seventh outlet pipeline 37 is connected to the first interface of the second cooler 52 through a ...

Embodiment 3

[0105] Such as image 3 with Figure 4 As shown, the cyclohexane oxidation tail gas purification device in this embodiment is used in conjunction with a cyclohexanone device with a capacity of 60,000 to 120,000 tons per year.

[0106] This embodiment is based on the device in Embodiment 2, that is, two temperature swing adsorption towers are used as a group. There are three groups of six temperature swing adsorption towers in this embodiment, namely the first temperature swing adsorption tower 81, the second temperature swing adsorption tower 82. The third temperature swing adsorption tower 83, the fourth temperature swing adsorption tower 84, the fifth temperature swing adsorption tower 85 and the sixth temperature swing adsorption tower 86. These six temperature swing adsorption towers are all connected in parallel, and the adsorption steps, purging steps, desorption steps and blowing and cooling steps are performed alternately, so that the treatment of tail gas can be carr...

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 a tail gas treatment device for a cyclohexane oxidation system. The device is characterized by comprising a temperature swing adsorption tower with three inlet pipelines, with the first inlet pipeline connected to a pipeline of tail gas to be treated through a control valve, the second inlet pipeline connected to the first joint of a heater through a control valve, and the third inlet pipeline connected to the first branch of an inert gas pipeline through a control valve. And the temperature swing adsorption tower has five outlet pipelines, wherein, the first outlet pipeline is in connection with a PSA (pressure swing adsorption) nitrogen making instrument through a control valve, the second outlet pipeline is in connection with an aerodynamic transfer line through a control valve, the third outlet pipeline is in connection with the second joint of the heater through a control valve, the fourth outlet pipeline is in connection with the first joint of a cooler through a control valve, and the fifth outlet pipeline is emptied at a high post through a control valve. The second joint of the cooler is in connected to the inlet of a gas-liquid separator, the gasoutlet of which is connected to the inert gas pipeline through a compressor. And the second branch of the inert gas pipeline is connected to the second joint of the heater through a control valve. The tail gas treatment device of the invention has the advantages of stable operation and good energy saving effect.

Description

technical field [0001] The invention relates to a device and a process for preparing cyclohexanol and cyclohexanone by oxidizing cyclohexane, in particular to a device and method for treating tail gas of a cyclohexane oxidation system. Background technique [0002] Cyclohexane is an important chemical raw material intermediate, which can be directly oxidized to generate cyclohexyl hydroperoxide, and then decomposed to generate cyclohexanol and cyclohexanone, both of which are also important chemical raw materials. The method of preparing cyclohexanol and cyclohexanone by oxidation of cyclohexane can be divided into non-catalytic oxidation method and catalytic oxidation method; according to the difference of oxidant, it can be divided into oxygen method and other oxidant method. The oxidant used is generally an oxygen-containing gas, such as air, pure oxygen, hydrogen peroxide, etc. [0003] Because the air oxidation method does not use a catalyst, the oxidation product cycl...

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): B01D53/04
Inventor 孟启贵刘新安陈发挥赵风轩沈铁孟李国华杨清文尤金明万冬叶建红
Owner CHONGQING HUAFON CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap