The metallurgical industry is a strategic sector in which a large number of companies and people work. In the course of their work, the enterprises themselves, the infrastructure, and the mining itself generates waste that not only has a negative impact on the environment but contributes to the increase in the cost of metal due to the costs of its disposal.
As well, coking coal is a strategic raw material. Its value has a significant impact on the final price of the finished product.
In the metallurgical sector, the gasification technology is primarily focused on the recycling of hydrocarbon-containing waste with the possibility of saving coke. In the process of UNIVASTUM's gasification process, a large amount of heat reducing gases (CO, H₂) are formed. And these gases can be applied in the blast furnace, thus saving scarce coke. In addition, the carbon dioxide (CO₂) obtained during gasification, interacting with hot carbon (coke) forms additional CO, that is, it participates in the metal smelting process. Thus, the waste disposal using UNIVASTUM's technology actually eliminates the release of CO₂ into the atmosphere. In addition to various wastes in the gasification complex for the production of hot reducing gases, less valuable and cheaper types of coal (including brown) and peat can be used.
UNIVASTUM has developed a number of unique and effective solutions for the gasification of waste with the generation of electricity, heat and cooling and as a result energy costs are reduced.
The main technological parameters of the produced gas, depending on the use of the UNIVASTUM complex, are with the use of OXYGEN and without supply of OXYGEN. The temperature of the produced gas at the outlet is 200 °C, with a pressure of 1 bar. Productivity in both cases is a little over 6800 m³/h. Moreover, in the case of the base case, i.e. without oxygen supply – the total amount of CO and H₂ reducing gases supplied to the blast furnace will be 1 t/h or 8000 t/year. In the second case, with the use of oxygen, the productivity of reducing gases will increase by more than 2 times and will be 2.4 t/h or 19 150 t/year. This performance is achieved by changing the ratio of components in the composition of the product gas, as well as by reducing the nitrogen content as a result of oxygen supply.
The principle of calculating coke savings is based on comparing the amount of coke and reducing gases necessary to produce iron for the indicated reactions. To recover 1 kg of 3-valent iron oxide, about 250 g of coke or 562 g of CO and H₂reducing gases will be required.
In accordance with this, the total amount of iron ore from Fe2O3 reduced with CO and hydrogen without using oxygen in UNIVASTUM will be 3000 kg/h, and in case of using oxygen 6500 kg/h.
Thus, the saving of coke for the recovery of the same amount of iron ore in the first case will be 750 kg/h or 6 000 t/g, and in the second case, the savings will be 1600 kg/h or 12 800 t/year.
Used tires first need to be transported to certain services areas and then on to landfill (legal and illegal). Huge stockpiles of used tires around the world can confirm this. Tires are an excellent raw materials for gasification using UNIVASTUM's WARP ® GASIFICATION TECHNOLOGY.
Used transmission fluids
Service centers face the problem of the costly disposal, as lubricants and fluids are extremely harmful to the environment.
All used oils can be used in WARP ® reactors alone or as a high-calorie supplement.
Coke oven batteries
In the production of coke from coke oven batteries, a significant amount of high calorific gases and heavier hydrocarbons (naphthalenes, etc.) is released. UNIVASTUM's technology will allow for steam conversion to produce a significant amount of heat reducing gases. Their use in the blast furnace is much more efficient than the combustion of standard gases in thermal power plants of enterprises with the need for serious energy costs for the heating of gas pipelines.
MSW from the territory of the plant
MSW is an excellent raw material for the gasification in WARP ® GASIFICATION TECHNOLOGY. The technology itself and the further use of the resulting gas in the blast furnace eliminates the formation of dioxins and furans. MSW is recycled and even carbon dioxide is used in the process of metal smelting.
It can be disposed of the installation of a UNIVASTUM complex. The UNIVASTUM technology implements the principle of "zero waste". The resulting gas is sent to the blast furnace as a reducing agent, which saves the consumption of coke. Paving slabs are made from ash, and metal briquettes can be reused in metallurgical production.
Cheap low-calorie types of coal and coal waste
These types of raw materials can be used in the gasification complex to generate heat reducing gases in order to save coke and reduce the cost of the final product.
Parameters: 1 Module
Disposal per year
1,5 - 4 MW
3,5 - 7 GСal
Heat per hour
The modular design makes it easy to install from 1 to 5 complexes on one site. The small area of the complex and the small size of the sanitary zone allows you to place complexes on the territory of the factory. We can work with waste of various calories from 6 mJ.
Mobility;The complex consists of containers and can be transported to a new facility
Resources;Site → From 0.15 to 1ha;External Resources → Up to 1 m³/hour of water and 0.4 kV, 150 kW of electricity
Our Advantages & Benefits
Resolving environmental challenges
Reduced transportation and waste disposal costs plus the reduction of emissions.
Reducing the cost of electricity
Using hot reducing gases will save from 6,000 to 12,800 tons of coke per year.
Image and reputation
A company that cares for the preservation of the environment certainly improves its reputation both in the eyes of the local population and the world.
Projects payback in 3-8 years.
Health and Ecology
In the process of gasification, the system does not come in contact with the surrounding environment until the fuel is completely burned in the gas turbine. The complex has an extremely low level of exhaust emissions, corresponding to the highest requirements of the European Union and the USA. The complex is completely free of water and soil pollution.