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Application of PPS Ball Ring in Acetic Acid Plant of Polyethylene * Project
NegotiableUpdate on 05/06
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Overview
Application of PPS Ball Ring in Acetic Acid Plant of Polyethylene * Project: Acetic Acid Synthesis and Recovery Unit in Polyethylene * (PVA) Production Plant. Core process: Low pressure carbonylation synthesis method (methanol and CO react with rhodium catalyst and hydrogen iodide to produce acetic acid).
Product Details
Application of PPS Ball Ring in Acetic Acid Plant of Polyethylene * Project
1、 Project Background and Core Challenges
projectIn the production equipment of polyethylene * (PVA)Acetic Acid Synthesis and Recovery Unit.
Core process:Low pressure carbonylation synthesis method (methanol and CO react with rhodium catalyst and hydrogen iodide to produce acetic acid).
Working condition challenge:
Strong corrosiveness:The medium containsIodine, hydrogen iodideEquivalent to highly corrosive components.
High temperature and high pressure:Some tower operators have operating pressures as high as3.6MPaThe temperature exceeds 200 ℃.
High purity requirements:Efficient separation and recovery of acetic acid are required, while controlling the iodine content.
Solution:selectPolyphenylene sulfide (PPS)materialPall ringandIntalox saddlePacking provides safe, stable, and efficient mass transfer guarantee for the device.
2、 Product and Raw Material Introduction
Raw material: Polyphenylene sulfide (PPS)
Characteristics:High temperature resistance (long-term use temperature of 230 ℃), corrosion resistance (especially resistant to halogens, acids, and alkalis), high strength, high rigidity, and excellent dimensional stability.
Raw material guarantee:selectImported high molecular weight PPS resinEnsure the mechanical performance and lifespan of the filler under harsh working conditions from the source.
Packing selection:
PPS Ball Ring:The window structure provides a larger specific surface area and gas-liquid flux, with high mass transfer efficiency and reduced pressure.
PPS saddle ring:The asymmetric saddle structure avoids overlapping, ensures uniform liquid distribution, and has excellent mass transfer performance, making it an ideal upgrade to traditional packing materials.
3、 Specific application cases and technical parameters
The following are the specific application details of PPS packing in each key tower of the acetic acid plant:
| Application tower | Selecting fillers | Specification (mm) | Key operating condition parameters | Core function of filler |
|---|---|---|---|---|
| High pressure absorption tower | PPS saddle ring | 25x15x1.2 |
Operating pressure: 3.6MPa Temperature: 57.35 ℃ Medium: 99% acetic acid, trace iodine |
Maintain structural strength under high pressure, efficiently absorb iodine from exhaust gas and return it to the system to ensure catalyst recovery. |
| regeneration tower | PPS Ball Ring | 38x38x1.5 | Design pressure: 0.4MPa Design temperature: 100~204 ℃ Medium: 99% acetic acid,6.99% iodine |
Stable operation under high temperature and high iodine concentration environment, achieving effective separation and regeneration of components. |
| Distillation tower | PPS Ball Ring | 38x38x1.5 | Design pressure: 0.44MPa Design temperature: 190 ℃ Medium: 60% acetic acid, 40% propionic acid |
Resistant to high temperatures and organic acid mixed media, ensuring efficient separation of acetic acid and propionic acid. |
| Dealkylation tower | PPS Ball Ring | 16x16x1.1 | Design pressure: 0.4MPa Design temperature: 177 ℃ Medium: 99% acetic acid, trace iodine |
Using small-sized fillers to provide a larger specific surface area for refining the final product, ensuring product purity. |
Key performance indicators:
PPS saddle ring (25x15x1.2):Compressive strength> 3.6 MPaMatch the harsh pressure conditions of the high-pressure absorption tower.
PPS Ball Ring (38x38x1.5/16x16x1.1):Compressive strength> 3.2 MPaEnsure the structural integrity of the regeneration tower, distillation tower, and dealkylation tower for long-term use.
4、 Summary of program advantages
Corrosion resistance:PPS material can effectively resist the corrosion of iodine, hydrogen iodide, and acetic acid, prolong equipment maintenance cycles, and reduce maintenance costs.
Excellent mechanical strength:High compressive strength ensures that the packing material does not deform or break in the high-pressure tower, ensuring long-term safe operation of the device.
Stable high-temperature performance:Can work for a long time at temperatures above 200 ℃ without any performance degradation.
Efficient mass transfer efficiency:The optimized structure of the Bauer ring and the saddle ring ensures sufficient contact and efficient mass transfer between the gas-liquid phases in each tower.
Get your exclusive filling solution now!
If you are inPolyethylene *, acetic acid, or other highly corrosive, high-temperature and high-pressure chemical projectsIf you encounter similar challenges, we can provide you with professional product selection and technical support.
Dier Chemical Packing Co., Ltd., Pingxiang City, Jiangxi ProvinceYour trusted partner for chemical packing and tower internals solutions!
Application of PPS Ball Ring in Acetic Acid Plant of Polyethylene * Project
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