DCC Training Report Pitch Deck Teardown: A Technical Case

Introduction and Institutional Context

The document opens as a formal academic submission rather than a commercial pitch. Slide 1 identifies the subject as a "Vocational Training Report at Dankuni Coal Complex" (DCC), submitted by six students from the Techno India College of Technology. The context is established on Slide 3, where a formal declaration states the training took place over two weeks, from December 29, 2014, to January 10, 2015, under the auspices of South Eastern Coalfields Ltd. (S.E.C.L.).

Organizational Structure

Slide 6 provides the corporate hierarchy of Coal India Ltd. (CIL), a Maharatna company. It lists eight subsidiary companies, including Bharat Cooking Coal Ltd. and Central Coal Field Ltd., along with their respective head offices. This slide establishes the scale of the parent organization but does not provide specific data on DCC's individual contribution to the group's P&L.

Raw Material and Initial Handling

Coal Composition Analysis

Slide 9 presents a "Proximate Analysis of Raw Coal," comparing compositions from four different sources: SECL (Katora), ECL (J.K. Nagar), ECL (New Kenda), and ECL (Sripur). The data points include moisture content (3% to 6.5%), volatile matter (24% to 32.8%), and ash percentage (17% to 30.2%). This level of technical granularity is typical of an engineering report, focusing on the chemical inputs that dictate the efficiency of the downstream gasification process.

Mechanical Handling Specifications

Slide 12 details the technical specifications of the Wagon Tippler, a critical piece of infrastructure for unloading raw coal. Key metrics include a gross load capacity of 110T and a rotation angle of 165 to 175 degrees. The slide also describes the auxiliary systems: Inhaulers and Outhaulers for wagon movement, vibrating feeders for material transfer, and synthetic rubber belt conveyors. Slide 15 continues this technical audit by listing 15 different conveyor belts (C1 through C12 and CO1 through CO3), detailing their lengths, widths, and carrying capacities in metric tons (MT).

The Gasification and Retort Process

Gasifier Operations

Slide 21 describes the 3.6m diameter fixed-bed grate gasifier. It outlines the seven distinct zones within the gasifier: Pre-heating, Drying, Distillation, Secondary Reduction, Primary Reduction, Oxidation, and Ash Extraction. The capacity is stated at 4500kg/hr per gasifier. Slide 22 provides a steam balance, showing a total steam input of 1.00MT against an output of 0.992MT, and argues for the use of "wet blast" to increase the calorific value of the producer gas by raising the content of combustibles like CO, H2, and CH4.

Retort House and Carbonization

Slide 24 introduces the Retort House, where coal is carbonized in continuous vertical retorts through destructive distillation (pyrolysis). This process breaks down macromolecules into gas, liquid, and solid products. Slide 27 provides a process flow diagram for the Retort House, showing the transition from sized coal to coke, with byproducts like tar and ammoniacal liquor being extracted for further processing.

Gas Cleaning and Byproduct Recovery

The Gas Cleaning Plant (GCP)

Slide 30 is one of the most critical slides for assessing operational health. It compares the designed gas input (22500 NM3/Hr) against the actual present input (6300 NM3/Hr). This significant underutilization is attributed to a decrease in coal input to the retort. Slide 33 further highlights deviations in gas composition; for instance, Hydrogen (H2) is at 39.4% compared to a design parameter of 47.0-54.0%, and the net calorific value is 3280 Kcal/Nm3 against a design of 4200-4700 Kcal/Nm3.

Compression and Distribution

Slide 36 details the three-stage compression process required to sell the gas. The final discharge pressure reaches 12.5 Kgf/Cm2. The slide notes that the gas is sold through a grid line controlled by the West Bengal Government. Slide 39 provides a comprehensive flow diagram for the GCP, illustrating how impurities are stripped to produce marketable ammonium sulphate, light oil, and tar.

Auxiliary Systems and Safety

Water Treatment and Effluents

Slide 42 and 45 cover tar distillation and the Demineralized Water Treatment Plant. The report identifies specific problematic minerals like Calcium, Magnesium, and Silica that can cause scale buildup in boiler tubes. Slide 48 describes the Effluent Treatment Plant (ETP), including aerator tanks with a volume of 1450 m3 and a detention time of 16 hours, and clarifiers for settling suspended particles. Slide 51 explains the physical unit operations of the ETP, such as screening and flow equalization.

Safety Protocols and Hazard Management

The final section of the provided slides (57-60) focuses on the Safety Organization. Slide 57 lists the functions of the Safety Department, including accident prevention and the maintenance of safety appliances. Slide 60 provides a specific hazard-to-mitigation matrix. For example, to prevent acid and steam burns in the ammonia absorber area, the mandated protocol is the use of PVC gloves, suits, and acid-resistant paint for tanks. The slide concludes with visual aids for safety posters, emphasizing "Shoes First" and "Use Your Safety Helmet."

What Works and What is Missing

What Works: The deck is an exceptional example of technical documentation. It provides exact specifications for every major piece of machinery, from conveyor belt widths to gasifier diameters. The inclusion of "Present vs. Design" parameters (Slide 30, 33, 36) offers a transparent look at operational efficiency and identifies clear areas for industrial optimization.

What is Missing: As a fundraising document, it is entirely deficient. There is no mention of the cost of operations, revenue from byproduct sales, market demand for producer gas, or the competitive landscape of the Indian coal sector. There is no executive team biography (other than student names) and no strategic roadmap for addressing the 72% shortfall in gas input capacity.

Founder Takeaways

For a founder in the industrial or deep-tech space, this report demonstrates the level of operational detail required for a technical due diligence room. While a pitch deck should be high-level, having a "shadow deck" or appendix that mirrors this report's rigor—detailing chemical compositions, machine capacities, and safety matrices—is essential for closing rounds with specialized industrial investors. Specifically, the use of flow diagrams (Slide 27, 39) to explain complex multi-stage processing is a best practice for any hardware or biotech startup.