HMEL’s Polypropylene Unit (PPU), with a capacity of 467 Kilo Tonne (KT), produces the entire range of Homo-Polymer Polypropylene (PP), using the Novolen® gas-phase polypropylene process. The PPU is integrated with the refinery, ensuring feedstock security at all times and uninterrupted supply to customers of all application segments.

HMEL is utilising Novolen® gas-phase polypropylene process using Ziegler-Natta catalysts for the production of a full range of commodity and performance products that meet the requirements of even the most demanding applications. Novolen’s unique Versatile Reactor Concept (VRC) utilizes two vertical, mechanically stirred bed, gas-phase reactors, with which it is possible to achieve a broad portfolio of products. Homopolymers can be manufactured either in a single reactor or in parallel operation of two reactors depending on the requirement. Small reactor volumes allow rapid grade changes to meet diverse customer requirements.

Polypropylene produces in HMEL covering a broad range of industries requirements for film application, Moulding, fibre & filaments, Thermoforming, Sheet & Raffia applications. 

HMEL refinery’s state-of-the-art Delayed Coker Unit (DCU) produces high-sulphur Petroleum Coke (PET Coke) which is the carbonaceous solid residue remaining after the distillation of petroleum materials. Petcoke has more than twice the calorific value of coal and is widely used as an alternative to coal in power plants, cement kilns and blast furnaces.

Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace. Any coal-using industry can be a potential consumer of PET coke. Major industrial segments using Fuel grade Petcoke in India are:

Cement Kilns 

Thermal Power Plants 

Brick Kilns 

Lime Kilns

Cement Kilns 

Thermal Power Plants

HMEL’s Sulphur Recovery Unit (SRU) produces sulphur in powder and lump form. The maximum usage of Sulphur is for the production of Sulphuric Acid which is widely used as a raw material for producing phosphatic and nitrogenous fertilizers. In raw form, sulphur is also used in explosives, the sugar industry, match sticks etc.

HMEL’s Sulphur characteristics guidance values of assay and impurities as per BIS standard IS: 6655-1972 are as:

Assay (dry basis): 99 per cent by mass

Ash: 0.25 per cent by mass

Carbon: 0.1 to 1.0 Percentage by mass

Colour: Bright whitish-yellow

HMEL’s special products portfolio includes Premium Grade Mineral Turpentine Oil (MTO) that meets the stringent norms set by major paint manufacturers and food-grade Hexane that meet the requirements of sensitive industries such as Pharmaceuticals.

Fly Ash is the residue left after the combustion of Pet Coke in the HMEL refinery's captive power plant. Due to its cementitious properties, it is excellent for the manufacture of cement and bricks. India is the second largest brick maker in the world after China. The usage of Fly Ash in making bricks, compared to traditional clay bricks manufacture, reduces pollution.

Typical properties of Fly ash contains:

Appearance: Grey fine powder

Ash at 10000C: 90-98%

CaSO4: 35-45%

CaO: 45-55%