# Kazakhstan delivers first loop reactor sections for Silleno polyethylene plant

The first eight sections of loop reactors have been delivered to the construction site of the Silleno polyethylene plant in Atyrau Region, Kazakhstan. The plant, a project of KazMunayGas with SIBUR and Sinopec, represents an investment of approximately $7.4 billion and is designed to produce 1.25 million tons of polyethylene annually.

- Type: New facility
- Announced: 2026-11-10
- Where: Atyrau Region, Kazakhstan
- Value: $7.40B
- Jobs: 8,800
- Starts operating: 2029
- Status: under construction
- Capacity: 1.25 million tons of polyethylene annually
- Products: polyethylene
- Sectors: [Specialty Chemicals](https://endata.com/sectors/specialty-chemicals.md), [Plastics and Polymers](https://endata.com/sectors/plastics-polymers.md)

## Companies

- [KazMunayGas](https://endata.com/companies/67544.md)
- [Sinopec](https://endata.com/companies/1143.md) (partner)
- [SIBUR](https://endata.com/companies/2258.md) (partner)

## Sources

- [azerbaijantimes.org](https://azerbaijantimes.org/news/2469509), 2026-11-10: "The delivery marks an important stage in the implementation of what the company describes as Kazakhstan's largest petrochemical project."
- [hydrocarbonprocessing.com](https://hydrocarbonprocessing.com/news/2026/11/kazmunaygas-receives-first-loop-reactors-for-74-b-silleno-polyethylene-plant-project/), 2026-11-10: "The Silleno plant is designed to produce 1.25 MMtpy of polyethylene, making it one of Kazakhstan's largest petrochemical investments."
- [endata.com](https://endata.com/announcements/114810-kazakhstan-delivers-first-loop-reactor-sections-for-silleno-polyethylene-plant), 2026-11-10: "The delivery marks an important stage in the implementation of what the company describes as Kazakhstan's largest petrochemical project."
- [inspenet.com](https://inspenet.com/en/news/kazmunaygas-receives-reactors-silleno-pla/), 2026-11-11: "KazMunayGas received the first eight sections of loop reactors intended for Silleno petrochemical plant, this is a $7.4 billion project being built in the Atyrau region of Kazakhstan."

---
Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.