About 80% of the world's polysilicon is produced using the Siemen’s process, while advancements include granular polysilicon from fluidized bed reactors for improved efficiency. Key processes in silicon production include ingot production and wafering, utilizing various specialized equipment. Qatar Solar Technologies is set to build a $1 billion facility in Ras Laffan that will leverage next-generation reactor technology to produce significant quantities of granular polysilicon and other silane products.

1. Polysilicon

2. About 80% of the world’s polysilicon is produced using the
Siemen’s process developed in the 1950s. (a) Basic Siemen’s
reactor. (b) As grown polysilicon rods after a reactor run.
(Current generation reactors have many more rods.) (c) Final
polysilicon chunks ready for loading into a crystal growth
furnace.

3. Granular polysilicon, produced in a fluidized bed reactor, has a
higher packing density in the crucible and, because it flows, can
be used to recharge hot crucibles which lowers cost and
improves throughput of crystal growth processes.

4. Typical silicon industry production processes. (a) Ingot
production. (b) Wafering processes. (c) Optional processes

5. MAJOR EQUIPMENT
Hydro chlornation reactor
DCS reactor
Residue stripper
Quench column
Chlorosilane stripper
Crude TCS column
DCS / TCS column
STC vaporizer reboiler
TCS superheater
TCS vaporizer
CVD reactor
HCl absorber tower
HCl distillation tower
CVD ORG TCS/STC column

8. Qatar Solar Technologies (QSTec) will build a US$ 1 billion Polysilicon
manufacturing plant in Ras Laffan Industrial City.

10. TianREC is a joint venture of REC Silicon and Tian Hong, a Chinese
State-Owned Enterprise. The new plant, utilizing REC Silicon's next
generation fluidized bed reactor technology, is expected to have a
production capacity of 18,000 metric tons of granular polysilicon, an
additional 300 metric tons of Siemens polysilicon and 500 metric
tons of silane gas loading.

11. Database offer
https://www.primaryinfo.com/polycrystalline-silicon.htm