Larsen & Toubro (L&T), on Monday, announced that it has secured a significant order in the range of Rs 1,000 to Rs 2,500 crore for its hydrocarbon business under its AdVENT (Advanced Value Engineering and Technology) business vertical. The order is for license plus engineering, procurement and construction (L – EPC) of a Technical Ammonium Nitrate (TAN) plant along with Weak Nitric Acid (WNA) plant at Gadepan, Kota, Rajasthan from Chambal Fertilisers and Chemicals Limited (CFCL), a leading fertilizer company in India, the company said in a regulatory filing.