Petrochemical Production Plant

Petrochemical Production Plant  |  Our group has already formed the business systems of polyester engineering, computer engineering, equipment fabrication, specialty polyester, chemical fiber production, equipment Import & Export, etc. And we are also specialized in R & D, new functional polyester products, engineering plastics and etc.


Polyester Engineering Technical Services

Our group owns advanced semi-continuous and continuous polyester engineering technology in the world.


The biggest capacity of the semi-continuous line reaches 100 Ton/Day and the biggest capacity of the continuous line reaches 400 Ton/Day, all these can apply with differential production technology for the production of the bright, semi-dull, CD, water-soluble, high shrinkage, optical bright and film master chips.


Petrochemical Production Plant Automation Control Engineering & Services

Relying on our years experience of in automation control engineering, we can provide customers with various lines of plant automation control systems, including D.C.S. configuration, site instruments, and wiring connections.


Equipment, Parts Fabrication & Export of Petrochemical Production Plant

Various pressure vessels, non-standard equipment, and parts fabricated have already passed through the real test of more than 100 projects built by our group.


The quality is excellent, performance is premium. We can also fabricate various equipment in accordance with the client’s requirements.


High-tech Functional Polyester and Fiber Production & Trading

Our group, the Fiber Material Institute, specializes in actively conducting research and development for new products from a process-oriented perspective. We have achieved remarkable success in this field and have successfully developed a wide range of high-value polyester resin and fiber products. These include normal pressure CD, flame retardant, water-soluble, optical bright, and more. All of these products have been produced in significant quantities and have received positive feedback from our clients.



PBS Technical background

  • With the white pollution and non-renewable energy crisis becoming more and more serious, the development and use of biodegradable plastics have become one of the effective ways to alleviate this problem. PBS has become a leader in the family of biodegradable plastics due to its good biodegradability and heat resistance.
  • The industrialization project of PBS was listed in the innovation project of CAS in 2002, and in 2005 PBS was listed as one of the key issues of environmentally friendly materials. The State Focuses on Promoting the Industrialization of PBS.
  • Our company actively carries out product research and development and engineering design of PBS and produces high molecular weight and high intrinsic viscosity PBS products by utilizing the horizontal single/double-axis tackifying reactor.

PBS quality index

Degradable material PBS (Polybutylene succinate) prepare from 1,4-succinic acid (SA-1,4) and 1,4-butanediol (BDO) by continuous esterification and polycondensation.

quality index :
Density: 1200 ~1280kg/m3
Average molecular weight: ≥150,000
Melt index: ≤10g/10min
Intrinsic viscosity: ≥1.8dL/g
Melting point: 110 ~ 130℃

  • PBS Product Characteristics and Application
  • The raw material SA of PBS can be obtained either from petroleum resources or from the fermentation of biological resources.
  • PBS has good heat resistance. The hot deformation temperature and the service temperature of products can exceed 100 ℃.
  • It is easy to be decomposed and metabolized by many kinds of microorganisms, or enzymes in animals and plants in nature, and eventually decomposed into carbon dioxide and water.
  • PBS is widely used in the fields of life, agricultural materials (agricultural film, pesticide, and fertilizer slow-release materials), and biomedical polymer materials.

PBS Petrochemical Production Plant Process Brief

The production line consists of five reactors in series, two vertical esterification reactors with agitator, one falling film tower pre-polycondensation reactor, one cage-frame final polycondensation reactor, and one horizontal single/double-axis tackifying polycondensation reactor.

Three polycondensation reactors meet the production requirements of PBS for different degrees of polymerization.

Key equipment:

cage-type final polycondensation reactor

Single/double-axis tackifying polycondensation reactor

Melt forms film between rotating gears in a single/double-axis reactor, and small molecule BDO is continuously removed under high vacuum conditions, which leads to further condensation reaction, making the product achieve higher viscosity.

Recovery of by-product:

Recovery of THF from esterification wastewater


In the esterification stage, the byproduct of BDO is tetrahydrofuran (THF), which enters the separation tower with esterification vapor and is taken out from the esterification water. Therefore, a recovery unit of tetrahydrofuran is set up to recover THF from the esterification water. THF can be used as a solvent or other raw material for organic synthesis.


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Petrochemical Production Plant

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