Pulverized Coal Injection System
Continuous pneumatic injection
At Schenck Process, we provide full-turn-key systems for efficient, continuous pneumatic injection of granular or pulverized coal, directly to a blast furnace.
Through extensive experience in research and testing, design, engineered development and installation, we are capable of supplying an end-to-end continuous injection coal system, which offers not only cost-savings, but also operational improvements. These benefits range from smoother furnace operation, faster driving rates and higher productivity.
Why inject coal?
- Provides higher coal injection rates, compared with oil, or natural gas, thereby resulting in higher coke replacement rates, for given blast conditions
- Improves furnace productivity and fuel rate. In comparison to other injectants, coal injection allows utilisation of higher blast temperatures
- Coal allows higher rates of oxygen to be used to increase productivity
- Coal injection results in smoother blast furnace operation, with less hanging and slipping compared with coke operation
Download our process flow diagram HERE (Grinding_PCI_Integration PDF), to see an example of a complete system layout, designed by Schenck Process.
The diagram includes systems such as:
Commercial benefits and considerations for injecting coal
- Injected coal is considerably cheaper than metallurgical coke and can replace coke on an almost 1:1 basis
- Coke is more expensive. The limited availability of coke, as a result of environmental conditions, has forced it’s price to continually rise
- Injected coal is more economical than other tuyere injectants, such as natural gas, oil, etc
- The payback period for a coal injection plant is typically under 2 years.
- Long term coal prices are potentially more stable than oil, gas or coke prices
- Coal reserves are plentiful and geographically widespread – globally
- A wide range of coal types can be injected including low cost non-coking coals
- Potential revenue from unutilised coke capacity
To get in touch with a technical expert for Coal Injection, click HERE.